That may seem strange. Many people wouldn’t start with the Bible when talking about a scientific theory. But I’m a theologian, and I take the Bible with utmost seriousness. Talking about the Bible is a natural place for me to begin, both because the Bible was principally important in my youth, and because it remains so for me today.

I don’t mean to snub science. Science is important too. I read a lot in the sciences, and I think the evidence supporting the theory of evolution is strong. I try to take this and other evidence with great seriousness.

But the real story – for me – starts with the Bible.

Centrality of Scripture

Fortunately, my parents were committed Christians. Our family was one of those “attend-church-three-times-a-week-and-more” families. My parents were significant leaders in our local congregation, and I began following their footsteps early in life.

I doubt I missed more than a handful of Sunday school classes before I was twenty years old. And I always attended Vacation Bible School – even winning Bible memorizing competitions on occasion. (John 11:35 was my friend!) I participated on youth Bible quizzing team for a while too.

While growing up, I don’t recall anyone telling me that the Bible was the inerrant Word of God. But my passion for Scripture and my Evangelical community inclined me toward that position. Scripture was central in my life.

Besides, I wanted a failsafe foundation for my beliefs. And how could I convince my Mormon friends to become Christians if the Bible was not true in every sense, including literally true about what it said about the natural world? Witnessing to God’s truth seemed to require that I believe the Bible was without error on all matters, including matters related to science.

An Inerrant Bible?

My view of the Bible began to change when I went to college. It wasn’t that a liberal Bible professor brainwashed me away from the positions of my youth. Instead, I started reading the Bible carefully and the work of biblical scholars. I began to think it important to love God with my mind in a more consistent way.

And then I took a class in koine Greek, the language of the New Testament. In this course, I discovered several things. First, we have differing English translations of the New Testament, because the biblical text allows for a number of valid translation options. (When I later took Hebrew class, I found the diversity of valid translations even greater!) Second, we do not have access to the original biblical manuscripts/autographs. Our Bibles come from later manuscripts, the earliest of which are not complete. And, third, the oldest texts we have differ in many ways – although most differences are minor.

I also discovered discrepancies in the Bible. For instance, in Matthew’s gospel, Jesus curses a fig tree and it withers immediately (21:18-20). But in Mark’s version of the same story, the fig tree does not wither immediately and the disciples find it withered the next morning (11:12-14; 20-21). Mark says that Jesus heals one demon-possessed man at Gerasenes (5:1-20), while Matthew says there were two demon-possessed men involved in that same miracle (8:28-34). Jesus tells the disciples to take a staff on their journey as recorded in Mark 6:8, but Matthew says Jesus told the disciples not to take a staff (10:9-10). Jesus says Jonah was three days and three nights in the whale's belly. Then, making an analogy with his own death, he says the Son of Man will be three days and three nights in the heart of the earth (Mt 12:40). But Jesus was not dead three days and three nights!

I mention only a few of the many internal discrepancies. Once I discovered a few, I noticed more. This, of course, made me question whether I should say the Bible is inerrant in all ways.

What’s the Bible For?

I’m persistent. I don’t settle for easy answers, ignore problems, or appeal to mystery at the drop of a hat. I want to give a plausible account of the hope within me.

My quest for better ways to think about the Bible prompted me to read theologians and Bible scholars from the past and present. What I found surprised me! I had assumed believing the Bible is inerrant in all ways was the traditional position of Christians throughout the ages. I assumed it was the position of my own Christian tradition. I was wrong.

Few if any great theologians argued the Bible was absolutely inerrant. Augustine did not affirm inerrancy in this way. Thomas Aquinas didn’t. Neither did Martin Luther or John Wesley – a least in a consistent way. And I discovered through reading and conversations that those considered the leading biblical scholars and theologians today also reject absolute biblical inerrancy.

I did find a few teachers who said the Bible was inerrant. But when I read their explanations of the Bible’s discrepancies and their views about the differences between the oldest manuscripts, I found they stretched the word “inerrant” beyond recognition. Their meaning of “inerrant” was nothing like the usual meaning. And it was certainly not what most Evangelicals meant when they called the Bible the inerrant Word of God.

Perhaps even more important was my discovery that great theologians and biblical scholars of yesteryear believed the Bible’s basic purpose was to reveal God’s desire for our salvation. Many giants of the Christian faith could agree with John Wesley who said, “The Scriptures are a complete rule of faith and practice; and they are clear in all necessary points.”

The necessary points of Scripture refer to instruction for our salvation. They indicate that, as the Apostle Paul puts it, Scripture is inspired and “useful for teaching, for reproof, for correction, and for training in righteousness, so that everyone who belongs to God may be proficient, equipped for every good work” (2 Tim. 3:16-17). The purpose of the Bible is our salvation!

I also discovered Christian leaders over the centuries did not feel required to search the Bible for truths about science. In fact, they sometimes used allegorical interpretations that seem silly to me now. The vast majority of Evangelical scholars with whom I talked also didn’t think the Bible has to be inerrant about scientific matters.

After my studies, I came to believe that the Bible tells us how to find abundant life. But it does not provide the science for how life became abundant.

Tomorrow, Tom will discuss what his evolving view of the Bible has to do with evolution.

So, I’ve decided to try a slightly different approach for the next while—one that has these sorts of folks in mind. From time to time, you can still expect those more in-depth, technical articles, or perhaps a discussion of some new research that makes the popular press, or even an analysis of some new argument from the IDM or RTB. These will be breaks from the new routine, however. For the most part, we’re going to stick to the basics, much like you would if you took an introductory evolution course at a university. Don’t worry, though: this course doesn’t have any prerequisites! All that’s needed is a willingness to learn.

What you can expect

The goal of this course is straightforward: to provide evangelical Christians with a step-by-step introduction to the science of evolutionary biology.  This will provide benefits beyond just the joy of learning more about God’s wonderful creation. An understanding of the basic science of evolution is of great benefit for reflecting on its theological implications, since this reflection can then be done from a scientifically-informed perspective. From time to time we might comment briefly on some issues of theological interest (and suggest resources for those looking to explore those issues further), but for the most part, we’re going to focus on the science. For folks interested in the interaction between science and Christianity, I heartily recommend Ted Davis’ recent series as a fabulous introduction to the topic.

You can also expect a slow, patient pace. Since this course is intended for folks with little or no background in biology, we’re going to take our time to make sure no one gets left behind. This might be frustrating to folks who already know a fair bit about evolution. Hopefully even more knowledgeable readers will learn some new and interesting details along the way—but the goal will primarily be to help folks who are less well versed in evolution increase their understanding.

You can also expect a survey of many different areas that have some bearing on evolution. We’ll examine geology, paleontology, biogeography, genetics, and a host of other topics in order to provide a “big picture” overview. This broad-brush approach means that any given individual post will not necessarily be “convincing” to folks who have doubts about evolution. Think about assembling a large jigsaw puzzle: placing any individual piece, on its own, doesn’t convincingly demonstrate what the overall picture will show. This course will be like that. Each topic we cover will put a few pieces in place here and there, slowly building towards the final overall picture.

Since evolution is an active science, this process will also highlight where there are “missing pieces” that are still being sought by scientists. All of this is well and good, since the purpose of this course is not so much to convince anyone of the validity of evolutionary theory, but rather to inform readers about the nature and scope of evolution as a scientific theory in the present day. My goal is to provide readers with a basic understanding of what evolution is and how it works. Given that as the primary goal, if one finds the scope of the evidence ultimately convincing (or not) is somewhat beside the point. The intent here is to provide readers with information they can use to make their own, informed decision.

How you can help

First and foremost, you can help by spreading the word about this series to folks you think would be interested in learning more about evolution in a non-threatening environment. Secondly, you can help me by asking questions in the comments. One of the challenges of being a specialist is having the ability to put oneself in the shoes of someone just starting out. What might seem obvious to me may not seem obvious to you, and I hope you’ll feel that no question is too basic or too simplistic. If you’re wondering about something, it’s almost guaranteed that other folks are, too! So, please don’t be shy. I’ll do my best to answer questions in the comments, though I hope that some of our more skilled commenters will (respectfully!) help out here, as well. Finally, you can help by letting me know what broader areas of evolution you find confusing. I have my own ideas about what areas of evolution are commonly misunderstood, but I’d love to hear from readers about what areas they find difficult to understand. I’ll use this input to shape the topics I will cover as we go forward.

Getting started

In the next post in this course, we’ll dive into the course content by introducing two key areas: how scientific theories work in general, and how evolution in particular works as the current organizing theory of modern biology. 

Antibody fine-tuning

At this moment, millions of B cells are patrolling my spleen and lymph nodes, each sporting a different antibody on its surface. If a foreign molecule from the cold virus happens to stick to an antibody on a particular B cell, the cell can get “activated.”

Pathogens are like cockroaches. If you see one roach, you can bet there are many more lurking under cupboards and between walls. Just as one shoe won’t kill them all, one B cell can’t make enough antibodies to deal with an infection. Activation causes the B cell to reproduce, creating more and more B cells that can produce the same kind of antibody.

As is typical during cell division, most of the DNA in dividing B cells is copied with extremely high accuracy. But in the gene segments coding for the variable region of the antibody, mutations accumulate about a million times more often than normal. Why would this be? Isn’t the point of B cell replication to make more identical antibodies?

Almost. It turns out that these frequent random mutations contribute to optimize the antibody. A shopping story helps to illustrate. I was recently at the mall and found a fabulous pair of shoes on sale. Sadly they were out of my size, but it was such a good sale that I decided to buy the half-size down, figuring the shoes might stretch out a little and grow more comfortable with time. Bad idea! That great bargain turned out to be pretty expensive when I got blisters and never wore the shoes again. Clearly this was not an optimized choice.

Just because you can get your foot into a shoe does not mean it fits. Likewise, just because an antibody binds to an antigen does not mean the two are perfectly complementary. Descendents of the activated B cell have a mechanism to induce mutations so each one can make a slightly different version of the antibody. If one of the resulting B cells makes a better-fitting antibody than its kin, it will have a selective advantage and proliferate. The other cells will not become activated as often and will end up dying by apoptosis, a kind of cellular suicide. This mechanism of mutation and selection, called affinity maturation, produces a highly specific, strong interaction between the antigen and the antibody.

Antibody production and evolution both involve mutation and selection

I believe God is sovereign over all of creation, but I don’t imagine he is presently curing my cold by directly controlling the specific gene rearrangements and optimizing mutations in each of the millions of B cells in my body. Could he do so? Of course! But if that were the case, why bother making billions of antibodies in the first place? The evidence suggests that God has chosen to work through a random process, one which involves the routine creation and destruction of millions of cells that never get used. This is the ordinary means by which God maintains our health. The miracles of healing recorded in the Bible are miraculous precisely because they don’t occur by this normal, natural process.

In my last post, I stated that the generation of antibody diversity is an example in which God uses a “blind” system to sustain and preserve life. I then suggested a link to evolution by asking, “If God uses natural mechanisms that work over short time scales (less than a week) to evolve life-giving solutions to disease, could he also use a similarly elegant approach to create life over long periods of time?”

Some may argue that a small-scale process like antibody production isn’t comparable to the processes of mutation and natural selection that are supposed to have caused macro-evolution. Intelligent Design proponent Michael Behe, for example, accepts that all creatures (including humans) have a common ancestor, but he believes random mutations are not powerful enough to have brought about the diversity of life we see today. He argues that there is an “edge” of evolution: mutation can bring about drug resistance and other small-scale adaptations, but beyond a certain point it can’t really produce anything new.

Clearly, antibody production creates something new: the random recombining of whole gene segments generates highly specific, never-before-seen protein functionality within just a few days. The body can respond to any foreign entity, simply by sorting through billions of ready-made possibilities. Furthermore, a pretty-good solution can be made even better by generating many variations on a theme and sorting through these for the optimal antibody.

Evolution works by the same kinds of mechanisms, except the mutations occur in germ cells (which give rise to egg and sperm) rather than in B cells, and the sorting (selection) process occurs at the population level rather than the cellular level.

Though often neutral or destructive, mutations sometimes create new functionality

Most people are familiar with point mutations, in which a single DNA “letter,” or base, gets changed. However, mutations come in several other varieties. Short sequences of DNA can be inserted or deleted at random. Chunks of DNA can get cut out and inserted in the opposite direction. Individual genes or even whole chromosomes can get lost or duplicated. In rare cases, the entire genome can get duplicated!

The effect of a mutation principally depends on where it occurs, not on the size of the DNA segment affected. A large deletion occurring within a long stretch between two genes may do nothing at all. On the other hand, a single point mutation within a critical gene may cause a devastating disease. There is also a third possibility though: new functionality may emerge as a result of a mutation.

Let’s consider the protein hemoglobin, for example, which binds oxygen and transports it throughout the body in the blood. Hemoglobin is made from two pairs each of two amino acid chains, called α and β (blue and red in the figure at right). The corresponding genes that code for α and β have similar sequences to each other, and are believed to have arisen when an ancestral globin gene (still present in marine worms, insects, and some fish) duplicated and slowly changed over time. While the ancestral form can bind oxygen just fine, the four chains of hemoglobin cooperate to do so even better.

Both the α and β genes have undergone further duplications followed by smaller mutations. As expected, many of the resulting genes have become irreparably damaged by mutations, but they continue to exist in the genome as inert DNA “fossils.” Others, however, remain active and now perform specialized functions. For instance, one set of β genes binds more tightly to oxygen than the others; it becomes active only during development to ensure that the fetus gets enough oxygen from the mother’s bloodstream. A few months after birth, fetal hemoglobin turns off and the adult form turns on.

To summarize, mutations come in many forms (e.g. rearrangements, insertions, deletions, duplications) and can lead to good, bad, or neutral effects within an individual. B cells depend on random mutations to produce novel antibodies. A few are productive, but the vast majority of B cells die unused. Yet the entire process works for our good! In the same way, mutations in germ cells can lead to no effect, disease, or new and better solutions, as we saw in the hemoglobin example. These are the ordinary (but masterful!) means by which God creates and sustains life.

Editor's Note: For more on the evolution of the immune system, read Randy's Isaac's post "Complex Specified Information Without an Intelligent Source" at the ASA website.

Belief in God in an Age of Science

Introducing John Polkinghorne

An Englishman of Cornish descent, John Polkinghorne was born in 1930 in the coastal town of Weston-super-Mare, southwest of Bristol in North Somerset. Although his parents had three children, an older sister died in infancy and his older brother, who served in the RAF Coastal Command during World War II, died when his plane was lost over the North Atlantic on a stormy night in 1942. Effectively an only child from that point on, his family nurtured him in their Christian faith, leading him to say a few years ago, “I cannot recall a time when I was not in some real way a member of the worshipping and believing community of the Church.”  (From Physicist to Priest, p. 7)

At the same time, his gift for mathematics did not go unnoticed, resulting in several years of study at Trinity College, Cambridge (where Isaac Newton had lived and worked in the seventeenth century). As an undergraduate, Polkinghorne studied applied math rather than pure math, a typical choice for someone interested in physics. There, he formed a close friendship with a classmate, Michael Atiyah, who would be best man at his marriage in 1955 to another mathematics student, the late Ruth (Martin) Polkinghorne. Later knighted, Sir Michael was President of the Royal Society in the early 1990s, the same period when Polkinghorne was president of Queen’s College, Cambridge.

​Sir Michael Atiyah (Source)

Polkinghorne was particularly inspired by the course in quantum physics taught by Paul Dirac, whom he has described as “undoubtedly the greatest British theoretical physicist of the twentieth century,” an opinion with which it is hard to disagree. For Polkinghorne, Dirac’s lectures were simply unforgettable: “so profound was the material, and so closely structured was the argument, that one was carried along enthralled by the experience.” (From Physicist to Priest, p. 26)

Paul Dirac (Source)

Remaining at Cambridge for graduate study, Polkinghorne worked under the Pakistani physicist, Abdus Salam, who later became the first Islamic scientist to win the Nobel Prize, which he shared with Americans Sheldon Glashow and Steven Weinberg for contributions to unifying the electromagnetic force and the weak nuclear force. Then he did postdoctoral work at Caltech with Murray Gell-Mann, another future Nobel laureate for his work on quark theory, and attended the famous lectures by yet another future Nobel laureate, the late Richard Feynman.

After Caltech, Polkinghorne taught briefly at Edinburgh before returning to Cambridge, where he was soon elected to a new professorship in mathematical physics. Quantum mechanics (QM) is his specialty; his writings on both QM and its interaction with theological ideas are numerous. His book, The Quantum World, has sold more than 100,000 copies, and when Oxford University Press wanted a book on this topic for their highly successful series, “A Very Short Introduction,” it was Polkinghorne who wrote it. His former students include Nobel laureate Brian Josephson, “the most precociously brilliant undergraduate that I ever taught,” and Martin Rees, who was until recently President of the Royal Society.

Although Polkinghorne has never won a Nobel Prize, in 1974 he was elected Fellow of the Royal Society, the highest honor in British science. Three years later, at the top of his scientific career at age 46, he astonished his colleagues by announcing a decision to pursue ordination as an Anglican priest; two years later, he resigned his chair at Cambridge to enter seminary. Partly, he felt played out. As a former physics student myself, I do not find his diagnosis hard to accept: “In mathematically based subjects you do not get better as you get older. Somehow one needs mental agility more than accumulated experience, and it becomes progressively harder for an old dog to learn new tricks. It is unlikely that most people do their best work before they are 25, but most do before they are 45.” Or, to put it more succinctly, “I simply felt that I had done my little bit for particle theory and the time had come to do something else.” (From Physicist to Priest, p. 71)

Nevertheless, he also felt a genuine call to the ministry, for “Christianity has always been central to my life” and ‘becoming a minister of word and sacrament would be a privileged vocation that held out the possibility of deep satisfaction.” (From Physicist to Priest, p. 73) After seminary, Polkinghorne served as a parish priest for many years and later as canon theologian of Liverpool Cathedral. He was knighted in 1997—although, as an ordained minister, he declines to use the title, “Sir John Polkinghorne”—and was awarded the Templeton Prize in 2002. It has been altogether a life well lived for the kingdom of God.

Looking Ahead

I’ll return in about two weeks with a summary of Polkinghorne’s basic attitudes toward science and religion, which (in his view) have a “cousinly” relationship. In the meantime, readers are invited to read Zeeya Merali’s essay, “The Priest-Physicist Who Would Marry Science to Religion,” from the March 2011 issue of Discover magazine, and “An interview with John Polkinghorne,” by philosopher Paul Fitzgerald.

References

John Polkinghorne, From Physicist to Priest: An Autobiography (2008).

The majority of health care workers deal with the confusing issues of life, death, and the apparent random tragedy of disease that can devastate families emotionally, financially, and spiritually. In fact, when I separate myself from the sterile aspects of a lab test review or ordering of radiographic images, I often find myself extremely saddened by the reality that children suffer from chronic disease, and in that aspect, I have found my faith to be a salve for me. I have been involved in the field of medicine for a relatively short time, only 21 years since first starting medical school. I marvel daily about the advancements of this tool that we have named “modern medicine”. Indeed, in the past 20 years alone, the progress we have made in the diagnosis and treatment of cancer, cardiovascular disease, and infectious disease has been seemingly unstoppable. Despite these advances, we have not adequately addressed how we handle various aspects of suffering (physically, spiritually, and mentally) in long-term hospitalized patients, in patients with chronic disease, and in the elderly.

I have often been asked if my faith has been affected by being exposed to illness and death. I would resoundingly say “No”, but I know health care workers run the entire gamut of a belief in God. There was a time when I would have said otherwise; however, my lay interest in the processes of our Earth (biologic and geologic) has convinced me of a Creator. I am a Christian, and this essay will discuss how I use my scientific and medical background to justify my faith. If you are an atheist reading this essay, you will have realized that you and I have belief differences from the beginning of this writing. If you are an evangelical Christian, I want you to realize that I am not going to talk about my conversion or my baptism. That aspect of my life is not the point of my essay, but you should know, for background, that I do accept Jesus Christ as my Savior.

I was born and raised in central Texas where a large percentage of the population is evangelical Christian. As I progressed through public education, I had convinced myself that I was agnostic. This was a personal decision, not based on any family influence. In fact, I had Christian parents who were educators and who had an interest in my pursuing a science career as a way of opening my mind to the needs of humanity and intellectual fulfillment. However, my trail away from my Christian faith lasted about 15 years and was most influenced by many of my evangelical classmates, especially in high school and college. I was exposed to Young Earth Creationism (YEC) by many friends, and at that time, I did not think it was even possible to reconcile a Christian faith with my interest in science.

In particular, I was interested in pursuing a career in paleontology or ecology, and I became even more convinced in college, that I had to make a profound choice – either I chose a career in science and reject YEC claims that had no basis in reality, or I would have to abandon a science career all together. I was only aware of those two options at that time and was not aware of a third way leading to a reconciliation of my faith. I will admit that I was fairly angry about the absolutism provided by so many of my YEC-minded friends in the face of massive amounts of biologic and geologic data. I became angry about the concept of religion in a very self-centered sort of way. Eventually and after much contemplation, I ended up going to medical school after college as opposed to a career in natural history, as I decided that the job market was more stable in medicine.

Two particular events enabled me to completely reconcile my faith with science. First, I took a field research class that involved traveling through the southwest United States during the summer of my junior year of college. Seeing geologic layering and signs of erosion up close in areas such as the Grand Canyon and Bryce Canyon, as opposed to hearing about the concepts in the lecture hall, made me truly appreciate deep time (Figure 1). For example, although random events over millions of years formed beautiful geologic structuring of hoodoos in Bryce Canyon, the wind and rain making these amazingly beautiful sandstone columns spoke of the mechanistic properties of erosion. Seeing the effects of long-term erosion as being “beautiful” led me to wonder in my tent at night why consciousness was formed to allow humans to appreciate the majesty of nature. I was able to see the Milky Way at night as I camped in the various national parks, and I further contemplated the mechanisms of gravity, light, and star formation. I was captivated by this imposed beauty on the desert floor around me, the stark ruddy canyon walls, the conifer-filled woods, and the cloudless night with a waning moon. I kept a journal during my trip which I wrote in daily. I have read it again years later, and there are passages written, crossed out by pen, then written out again with some my first inklings that I likely believed in a Creator God.

Figure 1: In this picture, I am showing my daughter the various rock groups of the Grand Canyon at Grand Canyon National Park in Arizona. My visit to the canyon in college brought home to me the immensity of deep time and the beauty of a natural structure suggesting to me, in a strong way, that God must exist. When this picture was taken, I wanted my daughters to see what I saw, felt what I felt, thought what I thought, when I began to really be convinced there was a Creator.

The second aspect that brought me back into Christianity was exposure to a pastor in my late 20s. At this point, I was deep into my medical training as a pediatric gastroenterologist, but I was starting to attend church again, although not regularly. I also was working in a lab where we were using “knock-out” mice (mice with a gene removed to assess the resultant phenotype, or the observable traits) in order to determine the mechanisms of cirrhosis of the liver. Although my contribution to the lab was not ground-breaking, I was fascinated as to how a single gene deletion could lead to down-stream effects, including morphologic changes in the liver (i.e., cirrhosis). My research had demonstrated that specific gene mutations were leading to a diseased organ, and I came to believe that the genetic code encompassed in all living creatures was not likely explained as a random, undirected process.

The pastor with whom I was interacting with at that time had trained in astronomy prior to going into ministry, and it was fascinating to hear him reconcile his belief in an ancient universe with his faith. He was not the least bit worried about an ancient Earth and a far more ancient universe. He believed in a Sovereign God who could certainly provide for the mechanisms of the Big Bang and the resultant world that we live in. Over the months, my discussions with him led me back to reading my Bible daily for the first time, really, in my life. In my very humble and limited opinion, I could see that God, especially through the Gospels, provided an answer to what my purpose consisted of during my time here on Earth. I was to love and serve others as best I could, and I should let God be in control of the big stuff of life.

Here in the lab (and previously for me in the American southwest) there appeared to be sublime mechanisms at play in the world. Even when I looked at random processes (and I do believe that God allows randomness), the grandeur of life forms that have been present on our planet for hundreds of millions of years fascinated me. I did try to convince myself that randomness was evidence of no God, but I then decided that a Creator could certainly build randomness into any biologic or geologic system to allow for the abundance of detail that we see in the natural world around us.

Taken together, all of these views of the world in the micro- and macro-scale convinced me to come back to Christianity. I believe strongly that there is God who has allowed natural mechanisms to take place, random or not so random, which are exhibited throughout the universe. I certainly know that my wife, my children, and I will die someday, but a re-reading of the Gospels as well as reading the great Book of Nature around us reinforced in me that there was something more for all of us, even after death.

I have never regretted the re-discovery of my Christian faith. I especially take these thoughts with me, when I have to talk to families about sick or dying children. These are hard conversations to have, and I find comfort knowing that evidence of a creator God is ever present around us, even as each of us heads towards the end of life and subsequently, eternity.

Conversations about science and faith can be like that. People hold clearly discordant points of view, and it would be dishonest to ignore the conflict. Yet some voices emphasize the dissonance without any note of harmony to put it in context. Too often, science and faith becomes a hostile battle of worldviews, sounding angry, dissonant chords even among fellow Christians. But civil, gracious dialogue is possible. On the BioLogos Forum, we invite authors from a range of positions, including some that don't agree with all our beliefs, but we strive to set these dialogues in a context of respect and civility. When authors are fellow Christians, we don’t shy away from disagreements, but remember the broader context of our unity as fellow believers, the harmony that binds us together.

My own story is more harmonious than dissonant. My interest in music was paralleled by my interest in math and science and my involvement in church. My family and teachers encouraged my interests in science, and I remember how fun it was to play math games with my dad and brother. And every week we were in church: twice on Sunday, plus Wednesday night club, youth group activities, and Bible quizzing. While my church accepted the young earth position, they didn’t emphasize it, and I was never told that a particular science view was essential to being a Christian. When I encountered the evidence for the age of the universe and the evolution of life, I also found Christian authors who showed me how this scientific evidence could fit with Christian beliefs.

But others have experienced more dissonance. Nearly four years ago, Dr. Francis Collins launched this website with the story of a young university student in the midst of a profound personal crisis, what Dr. Collins called “a wrenching crisis of worldviews shaking her deepest foundations.” Without a context of harmony, too many people – young and old – feel they have to choose between two incompatible positions, either Christian faith or the findings of science. BioLogos exists to show another way. We hold fast to the authority of the Bible and the core beliefs of Christianity, and at the same time, accept the rigorous conclusions of mainstream science.

It is with these chords of dissonance and resolution in mind that I come to this opportunity to lead BioLogos. I have long sensed God’s calling to serve the church as part of this dialogue. Some of you know of me from a book I wrote in 2007 with my husband Loren, called Origins. I’ve been speaking and writing on science and faith for many years, but I did this around the edges of my primary career of teaching and research in astronomy. While I thoroughly enjoy teaching students and doing research, over the last year I have recognized God’s hand in leading me to shift my fulltime work to the science and faith dialogue. Now I’m looking forward to using and developing my gifts in service of BioLogos.

Joining me as a new member of the leadership team is Dr. Jeff Schloss, who will serve as our Senior Scholar. Many of you are already familiar with his work, and know he brings not only a strong track record of scholarship in evolution and philosophy, but tremendous skill in communicating to lay audiences. Jeff and I share a deep commitment to the unity of the body of Christ and a desire to remove barriers for people to come to Christ. I am delighted to have him on board.

Jeff and I inherit a strong and vibrant organization from our outgoing President, Dr. Darrel Falk. Darrel brought his deep love and concern for the church, along with his considerable creativity and hard work, to this effort. We plan to continue and build on the excellent programs he established.

One of the pleasures of my first few weeks on the job has been getting to know the BioLogos staff. Kathryn, Lisa, Stephen, Mike, Laura J, and LeAnne each bring key skills to the organization, as well as energy and a passion for the mission of BioLogos. The team keeps BioLogos functioning behind the scenes, from finances to computer programming to event planning. Two team members, Mark Sprinkle and Tom Burnett, have decided to move on to other opportunities after a year of dedicated service to BioLogos. As web editors, Mark and Tom revamped the blog, making it a forum for rich scholarly dialogue and vibrant testimonies, and drawing in new authors to write on a great mix of topics. They also organized the archived material, so that the best of BioLogos is readily accessible. We wish them well in their new endeavors. Joining the BioLogos team is Emily Ruppel as Interim Web Editor. You may know Emily from her work to develop and edit the e-zine God & Nature for the American Scientific Affiliation; she will join us part time at BioLogos while she continues to work with ASA.

We believe God has great things in store for BioLogos. We will continue to focus on connecting with scholars, pastors, teachers, and lay people, but in the months ahead, we will also be sharpening our vision and engaging afresh in strategic planning. We’ll be considering new audiences, new programs, and new priorities. I invite your comments below on directions you’d like to see BioLogos take.

In just a few years, this organization has impacted the lives of thousands of Christians and brought an important voice to discussions taking place within the church. Thanks to the strong support from The John Templeton Foundation and many other generous donors, the vision of Francis Collins is thriving. BioLogos is on the cusp of enormous opportunities and huge potential. While transitions are times of risk and vulnerability, they are also times of great opportunity. My prayer is that God will give us wisdom and guidance to be good stewards of this opportunity. May God continue to use BioLogos to bring harmony to a conversation that has emphasized dissonance for far too long.

Usually, even a non-Christian knows something about the earth, the heavens, and the other elements of this world, about the motion and orbit of the stars and even their size and relative positions, about the predictable eclipses of the sun and moon, the cycles of the years and the seasons, about the kinds of animals, shrubs, stones, and so forth, and this knowledge he holds to as being certain from reason and experience.

Now, it is a disgraceful and dangerous thing for an infidel to hear a Christian, presumably giving the meaning of Holy Scripture, talking nonsense on these topics; and we should take all means to prevent such an embarrassing situation, in which people show up vast ignorance in a Christian and laugh it to scorn. The shame is not so much that an ignorant individual is derided, but that people outside the household of faith think our sacred writers held such opinions, and, to the great loss of those for whose salvation we toil, the writers of our Scripture are criticized and rejected as unlearned men.

If they find a Christian mistaken in a field which they themselves know well and hear him maintaining his foolish opinions about our books, how are they going to believe those books in matters concerning the resurrection of the dead, the hope of eternal life, and the kingdom of heaven, when they think their pages are full of falsehoods and on facts which they themselves have learnt from experience and the light of reason?

Reckless and incompetent expounders of Holy Scripture bring untold trouble and sorrow on their wiser brethren when they are caught in one of their mischievous false opinions and are taken to task by those who are not bound by the authority of our sacred books. For then, to defend their utterly foolish and obviously untrue statements, they will try to call upon Holy Scripture for proof and even recite from memory many passages which they think support their position, although they understand neither what they say nor the things about which they make assertion.¹

– St. Augustine of Hippo (AD 354-430)

For a good portion of my life, I had an extremely difficult time admitting that I was wrong. To do so was an admission of intellectual failure, faulty logic, or simple ignorance—not knowing everything about everything.² Being wrong is a hard pill to swallow sometimes, because in many cases it equates to losing face. As it pertains to the creation-evolution debate, I believe that we evangelical Christians tend to express that fear by “holding the line” against certain areas of scientific study, rather than being willing to admit that we might be wrong. In most cases, we have no problem accepting the authority of the world’s best physicists, chemists, meteorologists, engineers, and physicians. Our problem tends to be with scientific authorities in only certain areas of study, such as biology, anthropology, paleontology, geology, and astronomy. Why? It’s because the Bible is the divinely inspired word of God and these areas conflict with the plain reading of Scripture, right?

When we evangelicals come to the table of scientific discussion, we tend to pick and choose those “foods” which appeal to us, while wrinkling our noses at what our theological tastes find disagreeable. As long as the menu includes a wide assortment of things we already like, and we share the table with people with similar tastes, we can get along just fine with this strategy. But is this wise in, say, a survival situation? Food is food, and if we’re hungry enough and don’t have a life-threatening allergic reaction to something specific, I would venture to guess that we’d dig right in without a second thought. In regard to the creation-evolution debate, I am convinced that the evangelical church will find itself in dire straights if we intentionally starve ourselves intellectually, especially with a healthy banquet in full sight and within reach. I also think having a too-restricted “diet” limits our ability to sit down with those outside the church and can, as Augustine believed, play a role in actually prohibiting the secular world at large from coming to a saving knowledge of Christ, “to the great loss of those for whose salvation we toil.” Several years ago, Bruce Waltke, former Evangelical Theological Society president and former professor of Old Testament at Dallas Theological Seminary, updated Augustine’s caution in a brief video production for BioLogos, suggesting that the church risks losing our ability to really interact with the world if we don’t trust God’s providence in this area. Wheaton College’s Professor of Christian Thought, Mark Noll, as the very first sentence of his book The Scandal of the Evangelical Mind writes, “The scandal of the evangelical mind is that there is not much of an evangelical mind.”³ If not for the fact that I’ve never met Professor Noll, I’d believe he was talking about me a decade ago.

What drives us evangelical Christians to “hold the line” against acknowledging truths in these certain categories of scientific knowledge? After undergoing several theological shifts myself over the last decade, and seeing others do the same, I believe I’ve been able to “reverse engineer” what happened in my own life: It was a subtle slide from a confident faith into a comfortable, unwitting arrogance. When we believe that we are in an intimate spiritual union with the Creator of the universe, it’s quite easy to forget (if we ever understood this in the first place) that God can couch theological truth in a variety of literary genres and, yes, even in the context of ancient, scientifically inaccurate cosmologies.⁴ Caught up in the awesome truth of spiritual union, what makes perfect sense to us at any particular point in our spiritual walk can be easily confused with “the truth.” We also gravitate toward churches that conform to our particular belief systems. We prefer pastors who preach to the choir. We buy books that support our particular theological system. To attend another church, listen to a theologically edgy pastor, or read a book from a completely opposite viewpoint from what we’re accustomed to would be to invite a considerable measure of tension into an otherwise comfortable intellectual and spiritual environment.

How many of us actually have or take the time to study evolutionary biology, theology, the history of biblical interpretation, ANE literature, or modern translations of Babylonian creation myths? I would venture to guess that very few of us have the same opportunities that professional scientists and theologians take for granted in their academic careers. To overcome the fear of losing intellectual face, I recommend exposing oneself to different ways of thinking about these topics, including perspectives that you might deem “outside the box.” Reading multi-view comparisons and critiques, such as those found in Zondervan’s wonderful Counterpoints series, is particularly helpful in this regard. Familiarity with and exposure to these views helps temper that initial fear or shock when we come across those few brothers and sisters in Christ who opt to take another approach to any one topic. (One youth pastor friend of mine, when discovering my views on a particular topic, approached me and excitedly exclaimed that meeting me was like meeting a dragon: “You hear stories about them, but you never see one!”)

A word of warning: Before I adopted evolutionary creationism, my neatly packed theology was virtually stress-free. Ignorance was truly bliss. Then came the paradigm shift, and all sorts of previously suppressed tension, questions, and doubts rose to the surface. Another word of warning: If you’re not confronted with tension, questions, and doubts in your day-to-day spiritual walk, something’s wrong. Wrestling with theological issues is not an activity to be avoided; it is a discipline to be vigorously pursued! If you are comfortable enough in your relationship with the risen Savior, you should not fear admitting your ignorance on various topics and entering into a period of temporary uncertainty. This fear can be remedied by taking advantage of a fully informed palette of theological options provided by genuine Jesus followers, including those that embrace biblical criticism. If one’s faith is truly rooted in the One by, for, and through Whom all things were made, all the theories put forth by the higher biblical critics and esoteric scientists should be no cause for fear—but all should be cause for loving dialogue.

Notes

1. St. Augustine of Hippo, The Literal Meaning of Genesis (De Genesi ad litteram), Trans. J. H. Taylor, in Ancient Christian Writers (Long Prairie, MN: Newman Press, 1982), vol. 41.
2. “Ignorant,” Oxford Dictionaries, accessed October 08, 2012, http://oxforddictionaries.com/definition/english/ignorant.
3. Mark A. Noll, The Scandal of the Evangelical Mind (Grand Rapids: William B. Eerdmans Publishing Company, 1994), 3.
4. See Denis Lamoureux, Evolutionary Creation: A Christian Approach to Evolution (Eugene, OR: Wipf and Stock Publishers, 2008); Brian Godawa, “Mesopotamian Cosmic Geography in the Bible,” accessed October 04, 2012.

My valiant helper, a small-sized tiger
Sleeps sweetly on my desk, by the computer,
Unaware that you insult his tribe.

Cats play with a mouse or
with a half-dead mole.
You are wrong, though: it’s not out of cruelty.
They simply like a thing that moves.

For, after all, we know that only consciousness
Can for a moment move into the Other,
Empathize with the pain and panic of a mouse.

And such as cats are, all of Nature is.
Indifferent, alas, to the good and the evil.
Quite a problem for us, I am afraid.

Natural history has its museums,
But why should our children learn about monsters,
An earth of snakes and reptiles for millions of years?

Nature devouring, nature devoured,
Butchery day and night smoking with blood.

And who created it? Was it the good Lord?

Yes, undoubtedly, they are innocent,
Spiders, mantises, sharks, pythons.

We are the only ones who say: cruelty.

Our consciousness and our conscience
Alone in the pale anthill of galaxies
Put their hope in a humane God.

Who cannot but feel and think,

Who is kindred to us by his warmth and movement,

For we are, as he told us, similar to Him.

Yet if it is so, then He takes pity
On every mauled mouse, every wounded bird.
Then the universe for him is like a Crucifixion.

Such is the outcome of your attack on the cat:
A theological, Augustinian grimace,
Which makes difficult our walking on this earth.

–Czeslaw Milosz,¹
 translated by the author and Robert Hass

The Problem

The poem above communicates in a very poignant and profound way the essence of the theological problem of death, pain, and suffering in the natural world—what has been referred to as “natural evil.” As we will see, it may also point to at least one aspect of a Christian response.

I have become convinced that one of the fundamental issues underlying much of the resistance of many Christians to an ancient, evolving creation is that of the problem of “natural evil.” “Natural evil” is also very often a primary focus of those who reject a personal and compassionate God, as it was for Darwin himself. The issue of theodicy thus seems not only to drive many people of Christian faith away from an acceptance of the conclusions of modern science, but also to drive members of the scientific community away from a serious consideration of the claims of the Christian faith. The topic is important, then not because its solution is central to the validity of the Christian faith, but because it often serves as an unnecessary stumbling block to a productive engagement of both science and faith.

The tension generated by our understanding of God’s character, as revealed in the Bible, and by the reality of the natural world around us has been the focus of much theological and philosophical debate within the Christian church since the first century. This article sets out to examine critically several of the proposed solutions to this problem, viewing them from the perspective of a geologist, paleontologist, and orthodox evangelical Christian.

The theological problem of death and pain emerges from the following propositional statements:

1. Scripture consistently declares the absolute goodness of God and the very goodness of his creation. Furthermore, Scripture declares God’s love and care for creation, and the glory and praise it returns to him.
2. Scripture also confesses a transcendent God who is omnipotent in power, yet immanent in creation as well. God’s creative activity is not described as being confined to some past event at the beginning of time, but as a present and continuing reality. God upholds creation in its being from moment to moment, and is creatively active in its history. This understanding of God’s relationship to creation has been well articulated by Jürgen Moltmann.²
3. In seeming conflict with these confessions of God’s character, we observe death, pain, and suffering as ubiquitous, even integral, aspects of the creation around us.

The apparent conflict between God’s goodness and the presence of pain and suffering is made especially acute when we consider the nonhuman creation.³ How can we accommodate the death and suffering of animals within a theology that declares both God’s omnipotence and goodness? C. S. Lewis forcefully puts the issue before us in his book The Problem of Pain:

The problem of animal suffering is appalling; not because the animals are so numerous ... but because the Christian explanation of human pain cannot be extended to animal pain. So far as we know beasts are incapable either of sin or virtue: therefore they can neither deserve pain nor be improved by it.⁴

Because the issue of animal pain so directly impacts our understanding of the goodness of creation, I will focus particularly on solutions to the problem as posed by Lewis.

How do we then reconcile the goodness of God who is immanent and active in his creation with the death, pain, and suffering we see embedded within it? There seem to be two basic alternative approaches to this dilemma.⁵

1. Natural evil can be attributed to something independent of God and acting against his will. This position threatens to limit God’s power and freedom.
2. Natural evil can be considered a part of God’s good purpose for creation, and either directly willed or permitted by him. Such a view would seem to bring into question God’s goodness and love for his creatures.

The tension between these alternatives—and efforts to avoid their negative theological consequences—surface in many of the proposed solutions to this problem.

In part 2, we start to look at some of the proposed solutions, beginning with the idea that a perfect creation was corrupted by a fall.

Notes

1. This poem was included in a collection of poems that was one of two works by Czeslaw Milosz mentioned in a review article by Michael Ignatieff, “The Art of Witness,” New York Review of Books (March 23, 1995). I thank Carol Regehr for bringing my attention to this work.
2. Moltmann refers to this aspect of God’s creative activity in history as “continuous creation.” Jürgen Moltmann, God in Creation (Minneapolis, MN: Fortress Press, 1993), 206–14.
3. I will not address here arguments concerning the degree to which animals experience pain. This issue is considered by Robert Wennberg in “Animal Suffering and the Problem of Evil,” Christian Scholar’s Review 21 (1991): 120–40. It is obvious to me that, for many animals at least, pain and suffering are a very real conscious experience.
4. C. S. Lewis, The Problem of Pain (New York: Macmillan Publishing, 1962), 129.
5. As stated by John Hick, in Evil and the God of Love, rev. ed. (New York: HarperCollins Publishers, 1977): “For every position that maintains the perfect goodness of God is bound either to let go the absolute divine power and freedom, or else to hold that evil exists ultimately within God’s good purpose” (pp. 149–50).

As we discussed yesterday, the most dramatic innovation yet observed in the E. coli Long Term Evolution Experiment (LTEE) was the ability, acquired by one of the twelve cultures, to use citrate as a carbon source under aerobic conditions. When we last discussed the LTEE in 2011, we noted what was known then about the mutations that eventually combined to produce the Cit+ trait:

Tracking down the nature of this dramatic change led to some interesting findings. The ability to use citrate as a food source did not arise in a single step, but rather as a series of steps, some of which are separated by thousands of generations:

1. The first step is a mutation that arose at around generation 20,000. This mutation on its own does not allow the bacteria to use citrate, but without this mutation in place, later generations cannot evolve the ability to use citrate. Lenski and colleagues were careful to determine that this mutation is not simply a mutation that increases the background mutation rate. In other words, a portion of what later becomes “specified information for using citrate” arises thousands of generations before citrate is ever used.
2. The earliest mutants that can use citrate as a food source do so very, very poorly – once they use up the available glucose, they take a long time to switch over to using citrate. These “early adopters” are a tiny fraction of the overall population. The “specified information for using citrate” at this stage is pretty poor.
3. Once the (poor) ability to use citrate shows up, other mutations arise that greatly improve this new ability. Soon, bacteria that use citrate dominate the population. The “specified information for using citrate” has now been honed by further mutation and natural selection.
4. Despite the “takeover”, a fraction of the population unable to use citrate persists as a minority. These cells eke out a living by being “glucose specialists” – they are better at using up glucose rapidly and then going into stasis before the slightly slower citrate-eaters catch up. So, new “specified information to get the glucose quickly before those pesky citrate-eaters do” allows these bacteria to survive. As such, the two lineages in this population have partitioned the available resources and now occupy two different ecological niches in the same environment. As such, they are well on their way to becoming different bacterial species.

As such, we noted three distinct steps observed by the Lenski group: steps they call potentiation, actualization, and refinement. Potentiation mutations do not themselves result in the ability to use citrate under aerobic conditions, but they are necessary for it to appear later. Actualization is the mutation that first brings about the Cit+ trait, though, as we noted, this step produced only a very weak Cit+ effect. This nascent ability, however, then undergoes refinement through additional mutations and selection to give the final, robust Cit+ trait observed in the culture.

While some things were known about these steps when the Lenski group last published on this topic (in 2008), the precise details remained unclear. What was needed was a complete characterization of the Cit+ bacteria through whole-genome sequencing to help indentify the changes. These long-awaited results are now available in a new paper published last month by the Lenski group, and they shed light on all three stages of the process.

Lights, camera, actualization

The key step - and the one of greatest interest - is of course actualization: the mutation that converted a Cit- cell to a Cit+ one. This is also one of the easiest steps to study, since the mutation provides the cell with a new feature that can be detected experimentally. Though E. coli cannot use citrate as a carbon source in the presence of oxygen, they are capable of using citrate in anoxic conditions (i.e. when oxygen is absent). To do so, they employ a protein that imports citrate in to the cell while at the same time exporting a compound called succinate. Since this protein is already present in the E. coli genome, it was long suspected that a genetic regulatory change that turned on its production in the presence of oxygen could be the key innovation that produced the first Cit+ bacterium in the culture. As we discussed yesterday, Behe notes that this change could result from a loss-of-FCT or a gain-of-FCT mutation:

“If the phenotype of the Lenski Cit+ strain is caused by the loss of the activity of a normal genetic regulatory element, such as a repressor binding site or other FCT, it will, of course, be a loss-of-FCT mutation, despite its highly adaptive effects in the presence of citrate. If the phenotype is due to one or more mutations that result in, for example, the addition of a novel genetic regulatory element, gene duplication with sequence divergence, or the gain of a new binding site, then it will be a noteworthy gain-of-FCT mutation.”

Interestingly, the actualization mutation was indeed a change of regulation of the anoxic citrate / succinate transporter, and it arose through a gain-of-FCT mutation. The mutation turned out to be a side-by-side duplication of the citrate / succinate transporter gene, as well as portions of two genes on either side of it. This imprecise duplication placed a partial fusion of these flanking genes next door to one of the copies of the citrate / succinate transporter gene. This brought the copy under the control of promoter sequences derived from of one of its neighbors, a gene that is active when oxygen is present. The resulting product was a copy of the citrate / succinate transporter gene that was now very weakly expressed in aerobic conditions. Since this is an example of a mutation that duplicates a gene and simultaneously creates a new regulatory element for it (causing significant sequence divergence), this is a clear-cut example of a gain-of-FCT mutation.

Responding to the data

While Behe has not yet, to my knowledge commented on this particular development within the LTEE, one of his colleagues in the Intelligent Design Movement (IDM), microbiologist Ann Gauger, has offered her thoughts. Two themes emerge in her commentary: that the Cit+ trait is “not new”, and that the number of mutations it required were within the bounds set out by Behe and another member of the IDM, structural biologist Douglas Axe:

When is an innovation not an innovation? If by innovation you mean the evolution of something new, a feature not present before, then it would be stretching it to call the trait described by Blount et al. in "Genomic analysis of a key innovation in an experimental Escherichia coli population" an innovation [...]

The total number of mutations postulated for this adaptation is two or three, within the limits proposed for complex adaptations by Axe (2010) and Behe in Edge of Evolution. Because the enabling pre-adaptive mutations could not be identified, though, we don't know whether this was one mutation, a simple step-wise series of adaptive mutations, or a complex adaptation requiring one or two pre-adaptations before the big event.

But does this adaptation constitute a genuine innovation? That depends on the definition of innovation you use. It certainly is an example of reusing existing information in a new context, thus producing a new niche for E. coli in lab cultures. But if the definition of innovation is something genuinely new, such as a new transport molecule or a new enzyme, then no, this adaptation falls short as an innovation. And no one should be surprised.

While Gauger does not speak to the tension between her description of the Cit+ mutation as “not genuinely new” and Behe’s criteria that this should be classified as a gain-of-FCT mutation, it is clear that she views this event as within Behe’s “edge” – i.e. within the bounds of “what Darwinism can do.” Additionally, she sees it as falling within the scope of what is evolutionarily possible as proposed by Axe’s work. In the next installment of this series, we’ll revisit how Behe defines his (claimed) limit of what evolutionary processes can accomplish, with this new evidence in hand. In doing so, a careful examination of the potentiation and refinement phases of the Cit+ transition will be informative.

For further reading:

Blount, Z.D., Barrick, J.E., Davidson, C.J. and Lenski, R.E. (2012). Genomic analysis of a key innovation in an experimental Escherichia coli population. Nature 489; 513- 518.

Michael J. Behe, The Edge of Evolution: The Search for the Limits of Darwinism (New York: Free Press, 2007).

Michael J. Behe (2010). Experimental evolution, loss-of-function mutations, and “The first rule of adaptive evolution”. The Quarterly Review of Biology 85(4); 419-445.

Growing up, David believed that Young Earth Creationism was the Christian position on origins and how God created. As he endeavored to learn more, he was intrigued by Francis Collins book The Language of God because Francis did not present evolution as a rival theory to Christian faith, but as something that described God's method of creation. David studied biblical interpretation and found John Walton's scholarship to be tremendously helpful in understanding the original purpose and intent of the Genesis narrative.

Reflecting on his personal journey, David thinks that it is important that we don't oversimplify questions related to science and faith, but that we explore them deeply in order to understand science in a robust, Christian way.

In his essay for that series, Jeff Schloss addressed the question of whether animal death is a natural evil, but also noted that such theological considerations aside, death does not actually “drive evolution” in the way most people imagine—especially when they think of violence in the natural world. This more complicated sense of death’s role is partially the result of modern evolutionary science recognizing the importance of cooperation and inter-relation among species, rather than just direct competition. But just as important is the knowledge that evolution is significantly shaped not by the deaths of individual creatures, but by extinction, the loss of species over time. In this post, we explore some aspects of how extinction acts as both a destructive and creative force in evolutionary history, including the evolutionary history of mammals.

Sporadic extinction

Extinction is actually a common feature of life on earth when viewed over long (e.g. geological) timescales. By some estimates, over 99% of the species that have ever lived have gone extinct. One factor that promotes extinction is the fact that evolution does not produce species that are optimally adapted to their environment, but only better adapted than their local competitors. Invasive species testify to this fact: local (endemic) species are not always the best-adapted species for their own environment. Examples abound where species from other environments are actually better-suited to out-compete endemic species. Here in my own province, the invasive Himilayan blackberry (Rubis discolor) easily outcompetes many endemic species. If endemic species were optimally adapted to their environment, this would not be possible, as they would outcompete all exotic species. Instead, exotic species, by chance, might be better adapted to an ecosystem they did not evolve in. These exotics may be capable of eliminating endemic species altogether.

Such an extinction event (of a single species, or perhaps a handful of species) alters the environment of other remaining species in an ecosystem. This, in turn, may influence the ability of some of these remaining species to reproduce compared to other species. For example, the extinction of a competitor might allow a species to increase in population size. Conversely, the extinction of a species that provides a benefit (such as a pollinator) may reduce a species in number. As the ecosystem landscape shifts due to loss of species, new biological opportunities, or niches, might arise. These new niches are then available to support new species to fill them.

Extinction, en masse

One way to appreciate how extinction opens up new niches is to examine mass extinction events – geologically brief periods where large numbers of species go extinct at the same time. Over the history of life on our planet there have been several mass extinction events. The largest such event, at the end of the Permian (~250 million years ago) appears to have been caused, at least in part, by intense volcanic activity over several hundred thousand years. This activity likely shifted CO2 levels and eventually led to a “runaway” greenhouse effect that dramatically raised global temperatures and led to anoxic (i.e. oxygen-depleted) oceans, though the exact contributions of these varied factors remains an area of scientific debate. What appears certain is that during this period environmental changes were too rapid for most species to keep evolutionary pace with, and as a result over 90% of the world’s species alive at that time went extinct. Obviously this represents destruction of biodiversity on an unimaginable scale, and the destructive effects of this event are with us to this day.

Speciation, en masse

This destruction, however, is not the whole story. Following on from the Permian mass extinction, we observe a steady increase in new species. These are species previously unknown in the fossil record. In fact, this pattern (a “radiation” of new species following an extinction event) is the rule, not an exception – we see the same effect after every mass extinction in the fossil record. Extinction is a driving force for novelty.

Perhaps the most famous mass extinction event is the Cretaceous – Paleogene (KPg) extinction, and it too follows this standard pattern. This mass extinction took place 65 million years ago when an asteroid ~10 kilometers in diameter struck the Yucatan peninsula. (Note: this event was formerly known as the Cretaceous – Tertiary (K-T) extinction, but that terminology is in decline within the scientific community). This extinction event is famous since it is the one that eliminated the dinosaurs (with the exception of the ancestors of modern birds). As with the Permian extinction, the elimination of so many species shifted the evolutionary landscape for the remaining species, and the result was a burst of speciation that appears rapid when viewed in geological time. Significantly for our own species, following the KPg extinction event is a burst in mammalian speciation, as small mammals that survived the event diverge and fill niches left empty by the dinosaurs. Without this event, the trajectory of mammalian evolution would certainly look very different.

Clearing the deck, and re-filling the niches

One interesting fact to note is that biological features that make a species resistant to usual, sporadic extinction are not necessarily the same features that will be useful during a mass extinction event. While species are continually under selection at the local level, there is no mechanism for (pre) selection to survive a mass extinction. As such, only species that happen to have the right combination of traits will survive, and often spread widely after a mass extinction. These so-called “disaster species” are usually generalists, and will later be displaced by more specialized species as they arise. As such, where sporadic extinction allows for more gradual turnover in species, mass extinction events are major “resets” of evolution that can radically shift what constitutes “well adapted” in a geological eyeblink. For mammals at the KPg boundary, small body size and an omnivorous diet (including the ability to scavenge detritus) were the “winning” combination of traits that allowed them to survive where larger, more specialized animals (think Tyrannosaurus rex) could not. From this rather humble station, mammals would come to dominate the world’s ecosystems over the coming eons – including a lineage that would someday lead to our own species. Far from only a destructive force, extinction is a powerful mechanism to allow evolutionary innovation, and one that was of significant importance to us.

For further reading:

Meredith, R.W. et al (2011). Impacts of the Cretaceous Terrestrial Revolution and KPg Extinction on Mammal Diversification. Science 334; 521-524.

Fastovsky, D.E. (2005). The Extinction of the Dinosaurs in North America. GSA Today (15); 1052-5173.

Benton, M.J. and Twitchett, R.J. (2003). How to kill (almost) all life: the end-Permian extinction event. TRENDS in Ecology and Evolution (18); 358-365.

The Evolutionary Role of Death & Natural Evil

In addition to providing a general theological critique of the endemic—as opposed to post-hoc or intrusive—origins of death in the natural world, John Laing’s imminently fair-minded essay also takes theological aim at the role death and natural evil play in the evolutionary diversification of life. It is one thing to say that death is primordial; it is another to view it not just as an ancient byproduct, but as the central means of creation. The understandable theological uneasiness expressed by John and many others about this issue ultimately rests not just on an understanding of God’s creative activity, but also on a particular representation of evolution. In this regard John makes two important claims:

• a) “…natural selection, with its emphasis on a natural state characterized by competition for limited resources and a general struggle for survival, is the primary means by which speciation takes place…”
• b) “death actually functions as a mechanism for life. Death plays a vital role in natural selection by rooting out weakness and driving evolutionary development.”

For reasons I discussed in the previous section, it is not entirely clear that death constitutes an evil that is incommensurate with divine activity. However, the fact is that the above depiction of evolution—which is not unique to John amongst public commentators and is largely commensurate with Darwin’s own views—does not adequately portray current discussions within evolutionary biology. There are three problems with this portrayal that I’d like to address in turn—three aspects of evolutionary theory that need to be better understood.

First, while there is no uncertainty about common descent or about natural selection as a cause of evolutionary change, there is considerable discussion over the extent to which natural selection is “the primary means” by which speciation takes place. For one thing, there are manifold other agents of evolutionary change: drift, gene flow, systems of mating, mutation itself unfiltered by selection. A tremendous amount of variation may be adaptively neutral, being invisible to natural selection. For another thing, some claim that evolution proceeds most rapidly and speciation occurs most precipitously in the relaxation of selection—when ecological times are good and the culling effects of the environment are minimized. We may see this in the contingency-driven formation or colonization of a new habitat or the exploitation of a new resource that does not displace previous variants. Or, speciation events or species-level innovations may be the results of chromosomal rearrangements or symbiogenesis that are not the cumulative results of selection. Finally, there exist manifold and admittedly controversial proposals that are critical of neo-Darwinism as a whole, claiming that natural selection may be a necessary, but is neither a sufficient nor a primary cause of large-scale evolutionary change.¹

Second, notwithstanding Darwin’s formulation of natural selection in terms of competitive struggle as (accurately) cited by John, the modern understanding of evolution and competition is considerably more differentiated and complicated. For one thing, competition is neither a necessary nor a sufficient condition for natural selection. Natural selection is formally defined as the differential reproduction of genotypes (or information.) Some sets of genes are replicated with greater efficiency than are others. Competition is formally defined as the negative impact of two organisms (or two species) on one another’s fitness. You can have all sorts of competition that does not result in natural selection. And importantly, you can have differential reproduction by natural selection without the negative fitness impacts of competition. Colonists to a new under-exploited habitat, or two species that are partitioned onto separate resources in a way that minimizes competition might well have some variants that leave more offspring than others without displacing them. This is natural selection.

Indeed, imagine an infinite habitat with non-limiting resources and no competition at all: as long as there were adaptively salient mutations, there would be natural selection—some of those new genotypes would reproduce more effectively than others. Competition, to whatever extent it exists in nature, is a consequence of finitude and not a necessary precondition of natural selection. And finally, the role of cooperation in evolution has itself been massively reconsidered in recent years. It would not be entirely unfair to say that on the basis of mathematical models and empirical data, the proposal that cooperation “is now seen as a primary creative force”² and a “fundamental principle of evolution”³ has moved from being a cult-alternative to a widely accepted paradigm. Indeed, cooperation and increasing scales of cooperative interdependence are seen not only as a formative process but also as a recurring product of evolutionary change, which may even be viewed as “progress.”⁴ A biologically significant and theologically salient thematic trend across major evolutionary transitions, is that cooperative interdependence itself – and the wondrous properties of life mentioned in the first installment of this essay – seem to be amplified through selection.⁴ Through evolution, God may be seen to confer life and confer it in greater abundance.

Third, the claim that “death drives evolutionary development” turns out to be problematic. Recent discussions of death and senescence (organismic decay) between various branches of the biosciences are spirited and fascinating. One of the vexing characteristics of living creatures is the internalization of death and senescence: even if an individual is not killed by external forces, it will die from the inside out—virtually no species is immortal.⁶ One account of this—the rate of living theory of senescence—understands it not in terms of selection for reduced mortality but in terms of biophysical or allometric constraints relating rate of metabolism to rate of wearing out. Though it views senescence differently, the prevailing evolutionary theory of senescence, with several variants, does not affirm death or decay—at least the kind of death and decay that is intrinsic to organismic development—as a prerequisite to evolution by natural selection either.⁷

Indeed, internalized death is viewed not as driving but as deriving from, not as a necessary requirement for but as a byproduct of, natural selection. Specifically, mutations or traits with detrimental impacts later in life may not be eliminated by or may even be favored by selection if their contribution to reproduction early in life is sufficient. Now, neither theory completely dismisses the shaping role of death. Under certain but not all conditions, differential mortality may have adaptive import (and it is not even the longer-lived organisms that always have adaptive advantage). Extrinsic sources of death may also shape the internalization of death.⁸ But the view that death drives evolution does not adequately represent emerging scientific understanding of the relationship between natural selection and senescence.

Scientifically death does not “drive” evolution. And theologically, although neither evolutionary change nor ecological interaction “solve” the ultimate puzzle of human death, they may nevertheless mitigate the proximal existence of creaturely death by amplifying the complexity and vibrant abundance of living forms.

Darwin famously closed The Origin by observing “There is a grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one…from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.”⁹ Unlike John, I do not see anything in evolutionary theory to reduce, and I see much to augment the sense of grandeur and (for that matter) the appreciation of sheer goodness—both earthly and divine—evoked by the wonders of the living world.

Yet grandeur and goodness are not perfection. My Dad is still dying. I still wince at the suffering of clearly sentient animals. And, truth be told, I tremble at the biblical images of universal herbivory: even metaphors are metaphors of something, and in the case of biblical revelation, that something can be taken to be real and important. So like John, I confess to profound gratitude tempered with a lingering unease at the state of nature. Though I believe in a Fall, this unease is not rationally relieved by attributing to an Adam the present state of all nature. Nor is it resolved by the various alternative considerations I’ve described and which, taken together, seem to have considerable merit but not sufficiency. Notwithstanding, I thankfully affirm that “I have known the goodness of the Lord in the land of the living.” And I look to the day when we may say together, “My ears had heard of You, but now my eyes have seen You.” (Job 42:5)

Notes

1. E.g., Salthe, S. 2008. “An Anti-Neo-Darwinian View of Evolution.” Artificial Life. 14:231-233; David Depew and Bruce Weber (eds). Darwinism Evolving: Systems Dynamics and the Genealogy of Natural Selection. 2004. MIT Press
2. Michod, Richard and Denis Roze. 2001. “Cooperation and Conflict in the Evolution of Multicellularity.” Heredity. 86:1-7. Page 2
3. Nowak, Martin. Evolution, Games, and God: The Principle of Cooperation. Martin Nowak & Sarah Coakley, eds. Forthcoming from Harvard University Press.
4. Sigmund, Karl and Eörs Szathmáry. 1998. “Merging Lines and Emerging Levels.” Nature. 392: 439-441.
5. John Maynard Smith and Eörs Szathmáry. 1998. The Major Transitions in Evolution. Oxford University Press. Brett Calcott & Kim Sterelny (eds). 2011. The Major Transitions in Evolution Revisited. MIT Press.
6. “Virtually” is an important qualifier: while senescence has been documented in nearly all organisms examined, there are some cell lines and species in which this may not be the case.
7. Williams, George. 1957. “Pleiotropy, Natural Selection, and the Evolution of Senescence.” Evolution. 11:398-411.
8. This relationship is complex and not invariant. E.g., Williams, Paul and Day, Troy. 2003. “Antagonistic Pleiotropy, Mortality Source Interactions, and the Evolutionary Theory of Senescence.” Evolution. 57(7): 1478-1488.
9. Darwin, Charles. 1876. The Origin of Species By Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life. 6th Edition. John Murray. p. 429.

In my previous essay, I discussed “Darwin’s finches” and how surprisingly little Charles Darwin himself had to say about them. In fact, it was actually the British ornithologist David Lack (1910-1973) who conducted the critical research that immortalized the finches in biology textbooks and popular lore. In 1973, the eminent German zoologist Ernst Mayr wrote:

Already well known among professional ornithologists, his work on the Galapagos finches gave David Lack world fame… There is no modern textbook of zoology, evolution or ecology which does not include an account of his work.¹

Ernst W. Mayr

Decades have passed since Mayr wrote these words, and David Lack’s name has largely faded from public discourse. On the other hand, the Galapagos finches have become one of the most recognized symbols of evolution in the world today. Does it really matter whether Lack or Darwin gets credit for describing the evolution of these remarkable birds?

Insofar as evolutionary theory contrasted with religious belief, it makes a big difference. In a culture that is eager to equate evolution with atheism, it should come as no surprise that these birds are only known as “Darwin’s finches”. Darwin’s personal struggles and ultimate rejection of Christianity are well documented, and people are eager to link his loss of faith to his evolutionary theory. David Lack, on the other hand, began his scientific career as an agnostic, but shortly after publishing his famous book on the evolution of Galápagos finches, he converted to Christianity! ²

A Christian at the forefront of evolutionary biology

Lack’s Christian conversion did not mark the end of his scientific achievements, either. In fact, he continued as a prolific researcher until just weeks before he died. Among his many achievements, he was Director of the Edward Grey Institute of Field Ornithology (1945-1973), Fellow of the Royal Society, and President of both the International Ornithological Congress (1962-66) and the British Ecological Society (1964-65). His fellow scientists held him in great esteem:

He was described as one of the most outstanding among world ornithologists; he was certainly this, but he was also one of the world’s leading evolutionists. All the time one saw developing his use of birds as material for the study of wider, deeper, biological problems.³

David Lack at the International Ornithological Congress, 1962.

Clearly David Lack was an outstanding scientist, and his commitment to Christianity did not tarnish, hinder, or undermine his research on evolution. But we might also ask, what was Lack like as a Christian? Did he keep his faith hidden from view, afraid that it might compromise his reputation as a scientist? Ernst Mayr, who interacted with David Lack professionally and personally for nearly 40 years, had this to say:

I have known only few people with such deep moral convictions as David Lack. He applied very high standards to his own work and was not inclined to condone shoddiness, superficiality and lack of sincerity in others. This did not always go well with those who preferred to compromise in favour of temporary expediency. David had been raised in an environment in which great stress was layed on moral principles and this attitude was later reinforced by his Christian faith. This explains his extraordinary unselfishness and modesty, and his great devotion to his family, to his students, to his friends, and to all the things that he lived for. The equanimity, indeed serenity, with which he faced death after his terminal cancer had been diagnosed is further evidence of the strength which his faith gave him.⁴

Like Asa Gray⁵ before him, and Francis Collins⁶ after, David Lack was an sincere, devout Christian, as well as a leading scientist who employed evolutionary theory to make brilliant discoveries about the natural world. Though Lack did not see any conflict between his scientific and Christian beliefs, he was sympathetic to the concerns of his fellow Christians. Therefore, ten years after publishing his masterpiece on Darwin’s Finches, Lack wrote another book entitled Evolutionary Theory and Christian Belief: The Unresolved Conflict.

Originally published in 1957, this book deals with the very same science and faith questions that Christians struggle with today— topics like randomness and chance, death in nature, miracles, and evolutionary ethics. While it would be unreasonable to expect anyone to completely resolve these matters, Lack offered numerous insights both as a devout Christian and one of the world’s leading biologists.

Let’s take a brief look at how Lack addressed some of these questions.

Blind Chance or Divine Plan?

Evolutionary theory does not invoke supernatural forces in explaining the history of life on Earth; instead, it relies on naturally-occurring processes to account for the vast diversity of life. Additionally, it explains animal behavior largely in terms of survival and reproduction, without appealing to any higher purpose of life. Taken together, does this imply that God is absent, and that our lives are ultimately meaningless?

David Lack responded,

Behind the criticism that Darwinism means that evolution is either random or rigidly determined lies the fear that evolution proceeds blindly, and not in accordance with a divine plan. This is another problem that really lies outside the terms of reference of biology. It is true that biologists have inferred that, because evolution occurs by natural selection, there is no divine plan; but they are being as illogical as those theologians whom they rightly criticize for inferring that, because there is a divine plan, evolution cannot be the result of natural selection.⁷

When rendering judgment on the ultimate meaning of life, biologists are speaking from their person beliefs, not from scientific authority. Moreover, Lack pointed out that many science enthusiasts have employed the concept of “randomness” in ambiguous and misleading ways:

Mutations are random in relation to the needs of the animal, but natural selection is not. Selection, as the word implies, is the reverse of chance.⁸

In support of his view, Lack pointed out that convergent evolution has produced uncanny resemblances between distantly-related species across the world, notably among marsupials in Australia. Different evolutionary trajectories can lead to very similar results.⁹

Death in Nature

After addressing concerns about the seeming “randomness” of evolution, Lack turned to another great concern, the role of death in natural selection:

Various writers–some Christian and others agnostic–have been troubled about natural selection not only because it seems too random, but also because it is so unpleasant.¹⁰

Image courtesy John Marsh Photography via Flikr

Genetic mutations are generally harmful, and for evolution by natural selection to produce new forms of life, an awful lot of organisms must die. For many Christians, it is inconceivable that a loving and merciful God would allow death on such a vast scale.

But Lack also pointed out that rejecting evolutionary theory doesn’t actually get rid of the problem of death. Regardless of what we think about evolution, the brute fact of mass extinction remains. Fossils of innumerable animals, plants, and microorganisms clearly demonstrate that the vast majority of species that have ever lived are now dead. It may be quite troubling for us to observe that our planet is a giant graveyard of natural history, but rejecting evolution will not change this fact.

Some Christians conclude that death could not have been part of the divine plan; instead, it must be the work of the devil, or the result of human sin. But this interpretation contains an implicit assumption that death is always evil. Is this really true? David Lack offered two intriguing insights:

Blue-cheeked Bee-eater (Merops persicus) pair in
courtship, seen in Basai, Gurgaon, India.
Image courtesy Koshy Koshy.

1. For a population to maintain a stable size, all births must be balanced by a corresponding number of deaths. A world in which no animals die is a world in which no animals are born. That means no reproduction, no courtship, and by implication, no singing birds—much to the dismay of ornithologists and people in love!

2. Some people, taking cues from Isaiah 11:6-7, suppose that in a perfect world, animals only eat plants. But in fact, plants themselves depend on the bacterial decay of dead organisms. If animals didn't die, then essential nutrients would disappear from the ground, and plants could not continue to grow. Eventually, there would be nothing left for animals to eat, and all life would cease.¹¹

Miracles

Many Christians are uncomfortable with evolutionary theory because it denies a miraculous, supernatural origin of life. They fear that if those miracles are denied, it might lead people to reject the possibility of miracles altogether, including the central feature of the Christian faith—the resurrection of Jesus from the dead.

As a devout Christian, David Lack certainly affirmed the fundamental tenets of the gospel. But at the same time, he explained to his readers that invoking miracles to account for unusual features of the natural world is not particularly helpful when trying to deepen our understanding of God’s great multitude of creatures:

[The biologist's] research depends on repeated observations. It need not, as popularly supposed, consist solely, or even mainly of measurements and experiments, but unless events are repeated, they cannot be assessed by science. Hence truly unique events come outside the domain of science, though biologists are not usually convinced when told they must, therefore, leave such problems as miracles to others. For one of the chief ways in which research has advanced is through the discovery of apparent exceptions to the known rules, and if further study shows the exceptions to be replicable, new regularities are revealed from which modified rules can be propounded. This method has been so successful that the biologist tends to doubt whether there are any types of irregularity, or seeming irregularity, that will not yield to it.¹²

But just because a scientist cannot repeat a particular event doesn’t mean it didn’t happen. Both natural history and human history contain unique events that only happened once. As we peer into the past, the difficulty of discerning fact from fiction inspires us to further investigate the mysteries that surround us.

Conclusion

David Lack’s book Evolutionary Theory and Christian Belief was quite insightful, but his enduring achievements took place in evolutionary biology, a place where many Christians are afraid to tread. While it is significant that he himself found no contradiction between his faith and his science, perhaps the greatest testament to the compatibility between Christian faith and evolution is the life he led as a believer in both. As we saw in Ernst Mayr’s candid praise, Lack reflected the light of Christ through both his personal and his professional relationships.

Today, many voices in our culture still insist that evolution is incompatible with a sincere faith in Jesus, but a careful look at history demonstrates otherwise. In the future, perhaps more people of faith will have confidence to study biology knowing that one of the most iconic symbols of evolution—the Galapagos finches—owe their fame in large part to a devout Christian named David Lack.

Notes

1. Mayr (1973) “David L. Lack.” Ibis: 433.
2. Larson, E. J. Evolution's Workshop: God and Science on the Galapagos Islands. New York, Basic Books, 2001: 218. See also Lack, David. (1973) “My life as an amateur ornithologist.” Ibis: 431.
3. Alister C. Hardy (1973). "David L. Lack." Ibis: 436.
4. Mayr (1973) “David L. Lack.” Ibis: 433.
5. For more about Asa Gray, see the BioLogos FAQ “How have Christians responded to Darwin’s Origin of Species?”
6. See Francis Collins’ autobiography The Language of God: A Scientist Presents Evidence for his Belief (New York: Free Press, 2007) (book info)
7. Lack, David. Evolutionary Theory and Christian Belief: The Unresolved Conflict. Methuen & Co., 1957: 67.
8. Lack, p65.
9. For more on convergent evolution and the possibility that evolution could be compatible with some form of divine purpose, see the work of Simon Conway Morris, especially The Deep Structure of Biology: Is Convergence Sufficiently Ubiquitous to Give a Directional Signal? Templeton Press, 2008.
10. Lack, p72.
11. Lack, pp75-76.
12. Lack, p82.

Recently, an elegant and powerful experiment was done to further investigate a question of interest to many evangelicals: how is it that we are so different from our closest biological relative (the chimpanzee) when our DNA is so very similar? Even when using estimates that maximize the differences, our genomes are 95% identical. The conclusion, that I have discussed here in the past is that a dispersed set of numerous small changes can have large effects on the form and function of an organism. Of course, small changes are what evolution specializes in: tinkering here and there, one mutation at a time, as we have directly observed in laboratory experiments. Before we discuss how this pivotal new study was done, however, a brief review of how genes work is in order.

Review: gene structure and function

If you’ve been following the ongoing Understanding Evolution series here at BioLogos, you will recall that we discussed gene structure and function not long ago, in the context of discussing non-functional DNA sequences (so-called “junk DNA”):

Genes have a typical structure (obviously simplified here somewhat). First off, there is the actual DNA sequence that specifies the protein product sequence (the so-called “coding sequence”, shown in blue). This sequence is usually broken up into segments in mammalian genes, and these sequences are spliced together when the DNA sequence of the gene is transcribed into a “working copy” called mRNA – a short duplicate of the code that can be used by the cell’s machinery to actually build the specified protein.

In addition to the actual coding sequences, other sequences are needed to tell the cell when and where certain genes should be transcribed into mRNA. Every cell in an organism has the same genes in their chromosomes, but not all are transcribed. Using different genes in different combinations is what makes cells take on distinct roles – for example, cells in your small intestine need different genes (for absorption of nutrients) than do cells of the immune system (for fighting off pathogens). Regulatory sequences make sure any given cell type has the right genes transcribed and made into protein products. Some of these sequences are part of the mRNA transcript (shown in red), and others are not transcribed but only part of the chromosomal DNA sequence (such as the “promoter” region that directs the enzymes responsible for making the mRNA transcript (shown in blue).

With this background in mind, we can now extend our understanding slightly further. DNA in cells is “packaged up” when not in use by winding it around a class of proteins called histones. This packaging keeps the DNA in a compact form, and it is useful in helping cells prevent genes they don’t need from being transcribed. For any given chromosome - which is one long strand of DNA – some regions will be packed away (and the genes there not transcribed), while other regions are unpacked (less tightly associated with histones) with the genes there actively undergoing transcription. The open regions allow for transcription because enzymes and other proteins needed for the process can gain access to the DNA there.

Comparing gene transcription across species at the genomic level

Because of the overwhelming similarity between the human and chimpanzee genomes (and the even greater similarity when examining only their protein-coding regions) it has long been hypothesized that changes in “where and when” genes are transcribed will be a major player in what makes our two species different (in contrast to the idea that we are different because of the relatively tiny changes in the coding regions of our genes). From an evolutionary point of view, there are a few ways to explore how differences in gene transcription arise once species go their separate ways, such as when our ancestors parted ways with our last common ancestor with chimps around 4-6 million years ago. The main idea is to compare the same cell type in both species: human skin cells versus chimp skin cells, for example. Determining what specific genes are transcribed (or not) in human cells and comparing the results to chimpanzee cells gives us an idea of how gene transcription differences arose in the two lineages since they last shared a common ancestor. The challenge, up until now, is that there was no easy way to indentify the changes in regulatory DNA that led to those differences in transcription. The problem arises because of the overwhelming similarities between our genomes: changes in transcription due to changes in DNA sequence are hard to find simply by looking for sequence differences, since in most cases the differences will be very small. There are also many small differences between our genomes that have no effect on gene transcription, so we cannot simply look for any difference at all. What we need is a way to identify which small changes led to differences in gene transcription.

Old hypotheses, new technology

Back in 2008, a method for addressing this issue was devised. As we have seen, DNA undergoing transcription is “unpacked” and accessible to enzymes. Researchers have long known about a certain enzyme, called DNAse I, that can cut exposed DNA but leave histone-packaged DNA alone. This means that DNA from any given cell type can be cut using this enzyme specifically at “DNAse I hypersensitive sites” (DHS’s) where regulatory DNA is unpackaged and a nearby gene is being transcribed. While this technique is decades old, what is new is a way to then go on to sequence the DNA next to each of these sites. This requires what is known as “next-generation” or “deep” DNA sequencing methods that can use a linker sequence to attach to the DNAse I cut sites and then amplify and sequence individual DNA fragments attached to the linker. Since we have the entire genome sequence of humans and chimps it is then trivial to take the sequencing results and map them to either genome. The results are a detailed map of what chromosome regions are unpacked and regulating transcription in each cell type. These maps can then be compared with related species across entire genomes.

It was only a matter of time before these powerful methods were applied to the human-chimp question, and the first results became available last month. The research group was of course interested in differences between the two species, and the results are fascinating. The researchers looked at several different cell types, and found similar results in all cases. The results for any given gene fall into one of several categories when compared to the human-chimp (H-C) last common ancestor:

• No differences in regulatory DNA relative to the H-C last common ancestor (1259 genes)
• Gain of regulatory DNA in humans relative to the H-C last common ancestor (836 genes)
• Loss of regulatory DNA in humans relative to the H-C last common ancestor (286 genes)
• Gain of regulatory DNA in chimpanzees relative to the H-C last common ancestor (676 genes)
• Loss of regulatory DNA in chimpanzees relative to the last common ancestor (211 genes)

While it was not surprising to find a significant percentage of unchanged genes, it was interesting to note the large percentage of differences in regulatory DNA, despite the overwhelming genomic similarity between the two species. Small changes had a large impact on gene regulation. The researchers went on to examine the new regulatory regions they had identified, and found that they showed evidence of being under natural selection. These mutations had not only brought change, but provided an advantage to their hosts.

These results underscore a few important points:

• Species become different because differences accumulate in both lineages once a common ancestral population splits into two. The differences we see in modern species are due to changes both species have accumulated over time.
• Tweaking the regulation of numerous genes appears to be a widespread mechanism for generating evolutionary novelty. Both gaining and losing regulatory sequences is common.
• These gains or losses in regulatory DNA require only very small changes at the DNA sequence level, but they can have profound impacts on how genes are transcribed.
• These changes appear to be widespread in genomes, and able to accrue in short evolutionary timescales.
• Small changes are exactly the sort of thing that evolution is known to be able to accomplish easily, one mutation at a time.
• These small changes bear the marks of natural selection, indicating that they were selected for as they arose.
• Anyone who wishes to call these differences “insignificant” will have to contend with the observation that the biological differences we observe between humans and chimpanzees are significant.
• Small, incremental changes at the genomic level fit nicely with the fossil evidence for human evolution, which, though fragmentary, indicates gradual changes in skeletal morphology over the same timescale.

Of course, this study is just the beginning, and future studies are sure to examine and compare additional cell types found in humans and our evolutionary cousins. These results have already added to the troubles of antievolutionary groups that wish to portray the differences between us as too great for evolutionary mechanisms to bridge. I suspect these troubles will only worsen in the coming years as these new techniques come into their own.

For further reading:

Shibata Y, Sheffield NC, Fedrigo O, Babbitt CC, Wortham M, et al. (2012). Extensive Evolutionary Changes in Regulatory Element Activity during Human Origins Are Associated with Altered Gene Expression and Positive Selection. PLoS Genetics 8(6): e1002789. doi:10.1371/journal.pgen.1002789

http://www.plosgenetics.org/article/info%3Adoi%2F10.1371%2Fjournal.pgen.1002789

It didn’t seem right to deposit such a gift unreflectively into our bank account, allowing it to be swallowed up anonymously into our daily expense fund. My wife Sarah and I talked about a symbolic way we might use the money to honor John’s mark of grace on both of our lives. We very quickly settled on our decision: an SLR camera with a fine telephoto lens.

Many people remember John Stott for his books and preaching, but fewer remember him for his love of creation, his ornithological passion, and his knack for bird photography. On the very first day of my job working as his study assistant, I found on my desk a brand new set of binoculars and a copy of “Birds of Europe,” by Lars Johnson (the definitive guide). No study assistant was to work for John unless we shared in his love for birds, or at least could ably feign it. I soon discovered how seriously he took this avocation. In London he would stop whatever meeting we might be rushing off to in order to catch a look at a passing Kestrel. At his writing cottage in Southwest Wales we would begin every Sunday morning at Pickleridge Pools to see the Loons and Cormorants. Wherever we traveled, whether Uganda, India or Hungary, we would always schedule an extra few days to visit the local bird life with the accompaniment of a local expert.

But I also discovered that his love for birds was an extension of his love for creation and for its Creator. Uncle John took seriously the Psalmist’s words, “Great are the works of the Lord, studied by all who delight in them” (Ps 111:2). Taking “the works of the Lord” to include both God’s work of creation and redemption, he would often say that nature study and Bible study must go hand in hand. He was ahead of his time in calling Christians to have a more robust doctrine of and appreciation for Creation, and he viewed having at least one pursuit in the realm of natural history as an outflow of Christian discipleship. Indeed, it is striking that in his very last book, The Radical Disciple, in which he reflects on “some neglected aspects of our calling,” he includes “Creation Care” among Christian responsibilities like Christlikeness and Dependence.¹ And as remarkable as his accomplishments were in authoring such influential books as Basic Christianity and The Cross of Christ, it was his much less well known book The Birds Our Teachers,² which includes over 150 of his own photographs, that he would most often pull out to show visiting guests.

Some criticized John for his theistic evolutionary position and even his appreciation for Darwin, who John viewed as a man genuinely conflicted with how his discoveries could be integrated with his personal Christian faith. But Stott saw no contradiction between his own commitment to the authority of Scripture and his openness to God’s use of evolution in His creative process. He was of course unequivocal in his assertion that “One cannot be a Christian and not believe in creation.”³ Yet believing that Genesis 1 speaks more to the “why” rather than the “how” of creation, John also affirmed, “Those Christians who believe in evolution…mean that the huge variety of animal and vegetable forms can best be accounted for not by the independent creation of each, but by a gradual process of ‘descent with modification’, whether or not Darwin’s ‘natural selection’ is the best explanation of its mechanisms.”⁴ If anything, for John the possibility of God’s implementation of the evolutionary process was a striking example of the way God does not simply create but is also actively involved in sustaining and ordering His world.

So on the date of John’s birthday, April 27, we used his gift and bought our new camera. Laying it out on the table, I realized I needed a spacious and protective carrying case to hold the various lenses and equipment. I climbed up into the attic and retrieved John’s old camera bag, which he passed on to me after he had his second embolism and could no longer see well enough to take photographs. As I opened it up and examined the various lenses and mounts inside, now too old to adapt to any of the modern equipment, I realized I was holding in my hands the tools of one man’s passion and an expression of his love for his triune creator God. Deeply moved, I picked up my own camera, a new tool for my own stewardship of created life, and headed outside.

Notes

1. John Stott, The Radical Disciple (IVP, 2010).
2. John Stott, The Birds Our Teachers: Biblical Lessons from a lifelong bird-watcher (Angus Hudson, 1999).
3. Ibid.
4. John Stott, People Our Teachers (Angus Hudson, 2002), 110.

With the first part of my essay as background, I now respond directly to Dembski’s analysis of “Darwinism” and how BioLogos differs from the view he critiques. He begins by posing a question, “Is Darwinism theologically neutral?” He goes on to describe two contrasting views:

1. Those of the agnostic philosopher, Michael Ruse, who claims Christianity and Darwinian evolution are compatible and,
2. Those of individuals who hold a young earth view and claim Christianity and Darwinian evolution are incompatible.

Dembski suggests that Ruse, in order to claim compatibility (neutrality), redefines Christianity. I agree he does this. Without belief in the bodily resurrection of Jesus, Christianity is dead and, as Paul says, Christians are of all people most to pitied. (1 Corinthians 15:19).

Dembski also states that a belief in common descent can be consistent with Christian faith (i.e. neutral), and here I agree with Dembski again. As he points out, Christianity is not defined by the mechanism that God chose to use in accomplishing his purposes in creation.

So far we are on exactly the same page. Ruse claims Darwinism is neutral, but only by departing from Christian theology. Some young earth creationists claim Darwinism is not neutral, but they focus on common descent and this, by itself, does not depart from Christian theology. However, as Dembski quickly notes at that point in his essay, he has not yet carefully defined Darwinism and Christianity. He goes on to describe what he considers to be some non-negotiables of each.

Dembski suggests that among the core non-negotiable principle beliefs of Christianity are: (a) divine creation, (b) reflected glory, (c) human exceptionalism, and (d) bodily resurrection of Jesus. I agree that these are non-negotiables; take away any of these beliefs and you no longer have Christianity. We’re still on the same page.

What about non-negotiables of “Darwinism?” They are, he says, (a) common descent, (b) natural selection, (c) human continuity, (d) methodological naturalism. With that, he proceeds to analyze each.

Common Descent

Common descent, which today is at the core of the biological sciences, was a fundamental tenet for Darwin. Dembski sees no significant theological problem with common descent. “By themselves [the Christian non-negotiables described above] allow that God might have specially created living forms or brought them about via an evolutionary process,” he writes. He sees no theological conflict with this Darwinian tenet, even though he does not subscribe to it.

Natural Selection

Dembski indicates that natural selection, as defined by Darwin, is in tension with two of the four Christian non-negotiables—divine creation and reflected glory. His primary concern is that Darwin’s view of natural selection is non-teleological. Insomuch as this is true (and Darwin’s views on teleology are complex and contested), I agree. If Darwin’s non-teleological views were correct, this would be incompatible with some of the non-negotiables in Christianity. As Dembski says, “to say that something is undetectable is not to say that it doesn’t exist....” I concur that Darwin had no scientific basis for concluding that the evolutionary process did not end up exactly the way that God intended in the beginning. If Darwin reached non-teleological conclusions on the basis of his data then he allowed his philosophical and theological commitments to influence his conclusions. Like Dembski, I believe God did call our existence into being; there is a teleological basis for our presence on earth. We are by no means an accident and to the extent that Darwin thought we are, he was wrong.

So far, I see no significant difference between BioLogos and the non-negotiables presented by Dembski. Intriguingly, however, Dembski goes on to state, “it seems odd, given C1—[divine creation], that God would create by Darwinian processes, which suggest that unguided forces can do all the work necessary for biological evolution.” Here we part company. As indicated in my introductory comments above, I believe that the natural activity of God is not less divine than the supernatural activity of God, something borne out by the Scriptures themselves. This does not mean that I think that no supernatural activity occurred in life’s history; I just don’t see why it would be “odd” if God chose to create life’s diversity through his natural activity. How would we know what is odd as it relates to the activity of God? The only reliable source of what is odd and what is not is God’s revelation through his Word. But I see no scripturally-based rationale for determining the expected ratio of natural vs. supernatural divine activity in creation. Scripture is silent on the issue and so far at least, science is as well—other than demonstrating that many biological features and mechanisms previously thought by some to be evidence of supernatural action can now be explained via God’s regular activity—that associated with his natural laws. For the present, I think it is best to withhold judgment about the extent to which God suspends his ongoing regular activity in favor of miraculous supernatural activity in the history of the creating life’s diversity.

I now come to the most fundamental point of disagreement between the Intelligent Design movement and BioLogos. Dembski states:

Given that science is widely regarded as our most reliable universal form of knowledge, the failure of science to provide evidence of God, and in particular Darwin’s exclusion of design from biological origins, undercuts C2 [reflected glory].

Furthermore, he also writes:

If God does occlude his purposeful activity in nature, that raises a tension with (C2), which states that the world clearly reflects God’s glory (Psalm 19) and that this fact should be evident to all humanity (Romans 1).

I don’t think that God occludes or masks his activity. Thanks in no small part to science, we now recognize that there are “signposts” (C.S. Lewis’s term) all over the place directing our attention to the existence of our Creator. The question is whether those “signposts” can be developed into scientific hypotheses that can be scientifically tested in a manner that parallels how one goes about testing the hypothesis that smoking causes cancer or that DNA is the genetic material. The heavens do declare the glory of God (Psalm 19), and, “ever since the creation of the world, his eternal power and divine nature, invisible though they are, have been understood and seen through the things he has made” (Romans 1:20). God has not occluded his activity. It is all around us. From the birth of a baby to the birth of a star; from a universe which is mathematically coherent to one which is exquisitely fine-tuned; from our sense of shame to our ability to recognize the good and the right—from all of these and so much more, we see signposts all pointing to our Creator. Individually each hints at something beyond ourselves. Together they shout out with the message of God’s glory. Still, can they be tested scientifically—in a manner that parallels whether penicillin kills bacteria or the mitochondrion is the cell’s energy factory—to determine whether God is at work in them? Can intelligent people who choose not to believe come up with feasible alternative explanations that do not include God? Sure, they do it all the time and, as Romans 1 tells us, they have been doing it from the beginning of human existence.

Given the way that God has worked through his regular natural activity, why should we expect to be able to develop a test for the activity of God? God is always active, but scientific testing of God’s activity would require a “control” where God is not active. How can we conduct an experiment which studies the “presence vs. absence of God” when God is always present as sustainer as well as creator?

Human Continuity

Dembski quotes from Darwin’s Descent of Man:

The difference in mind between man and the higher animals, great as it is, certainly is one of degree and not of kind. We have seen that the senses and intuitions, the various emotions and faculties, such as love, memory, attention, curiosity, imitation, reason, etc., of which man boasts, may be found in an incipient, or even sometimes in a well-developed condition, in the lower animals.

Even if all that Darwin says here were more or less true, it would still say nothing about that which makes humans truly exceptional, because—our linguistic and cognitive abilities aside—what makes us truly exceptional has less to do with biology than with the fact that God chose to enter into a unique relationship with humankind. Dembski paraphrases an ideologically strict Darwinian view of man as "not worthy of special divine attention, and with no prerogatives above the rest of the animal world." But Christians recognize that our material ordinariness is radically transformed by the presence and promises of God. Exactly as with the people of Israel among the nations, so humans among the animals: our special identity rests in the free choice of the Creator to give us his himself and his name. If we recognize that human specialness rests on God’s fellowship with and call upon us, and that we—alone of all creatures—are enabled by God to bear his image in the world, then anything Darwin said about the physical continuity between humans and animals is irrelevant. In the way that matters most, we are not continuous with animals. For philosophical and theological reasons, Darwin did not recognize this. Darwin, I believe, was wrong. I, like Dembski and like Southern Baptists in general, am not a Darwinist.

Methodological Naturalism

Dembski defines methodological naturalism in the following way:

The physical world, for purposes of scientific inquiry, may be assumed to operate by unbroken natural law.

He goes on from there to write that if one assumes that miracles were performed in salvation history, then it would seem to be arbitrary to assume that God would not also perform miracles in natural history as well. Although I do not rule out the occurrence of miracles in natural history, the purpose of miracles in the biblical narrative seems to stem from God’s desire to reveal himself to humankind, reminding us of and guiding us in our relationship with him and each other. Given that, I do not see why it is arbitrary to think that God may not have used miracles to accomplish his purposes in nature before humans were around to observe them.

However, I strongly disagree with Dembski that if one believes God has worked primarily through natural processes in creation as a whole, this makes belief in the resurrection less tenable. The two ought not to be tied together in this way, especially since I have already stated that I reject the notion that the ordinary and regular processes of creation are any less God’s—than what I have called supernatural processes. One’s conclusion about the mechanism of creation has no logical extension to one’s views about the historicity of the bodily resurrection of Jesus.

In conclusion, I think Dembski takes some steps that are both theologically unnecessary and scientifically unjustified in rejecting what careful study tells us about God’s marvelously ordinary processes of creation: ordinary because they follow his natural laws so faithfully, marvelous because they have resulted in a world of complex and beautiful life. On the other hand, I agree with Dembksi that Darwin’s views were not theologically neutral. Darwin’s views on teleology, human exceptionalism, and miracles were not compatible with Christianity. Quite simply, this is why I do not consider my views to be Darwinian and why I am not a Darwinist.

For further reading:

The BioLogos website offers many resources to acquaint readers with the incredibly strong scientific evidence for common descent and other facets of evolutionary biology.

Realizing such a beautiful thing made me desire God even more, and I began regularly attending the church a friend had introduced me to early on in my relocation to San Diego. The pastor’s messages were funny, relevant, convicting, and oftentimes full of scientific facts used to illustrate God’s majestic creation. As a college student pursuing a degree in biology, it seemed to be the perfect church. One Sunday the topic of evolution came up and I listened as he proceeded to explain how the “theory” was not only utterly ridiculous (it should really be called a “hypothesis”), but that it was incompatible with the Bible. Because the last biology class I took was in high school, I couldn’t quite recall what I learned about evolution; in my new-found zeal for righteousness, I figured doubting the theory was somehow pleasing God more.

Around this time I also began listening to a lot of Christian talk radio, and one of my favorite programs was a call-in show where listeners could join the discussion on that day’s topic. Every now and again evolution happened to be the topic, and whenever people would call in to defend it, the host always seemed to win the debate by countering every point they tried to make with a logical and persuasive argument that was also consistent with Scripture. Just as with my pastor, the radio host appeared to have done a thorough investigation of the matter. Because they were both Christians in leadership positions (and because they exuded absolute surety on the matter), I believed them when they claimed that, not only was there zero evidence for evolution, but that believing it was not consistent with the Christian faith. But the talk-show host didn’t stop there. According to him, evolution was not only a fraud, but a belief system that leads to suicide, Nazism and atheism. Furthermore, because it was being taught in public schools, evolution was responsible for the moral decline in our country. To be fair, this talk show host wasn’t alone. Nearly every program (on all three radio stations I listened to) mentioned similar sentiments about evolution at one time or another. I quickly got the sense that all Christians were in agreement on this issue, and since I wanted to be a good Christian, I determined that I was, too.

During this period I found myself in a very awkward situation. On the one hand I was a follower of Jesus Christ who loved the Bible, knew that it was God’s Word, and, therefore, knew that it was not full of lies. However, I also was someone who had loved science for many years and was planning on pursuing a career in research. Given all that I had learned about the incompatibility of the two worldviews, it seemed that I would have to choose. Or did I? One day on my commute home I turned on my usual AM radio station and heard something quite unexpected – the voice of Ben Stein. Intrigued as to why the teacher from Ferris Bueller’s Day Off was on Christian radio, I continued listening as the host and Mr. Stein discussed Intelligent Design and the new documentary that highlighted it, Expelled! No Intelligence Allowed. Loving movies and having never heard of ID, I saw it as soon as it came out. The film did not disappoint: I left excited and relieved that an alternative to evolution had arrived—one that also seemed to be compatible with my faith.

By this time I had graduated from college and decided to pursue a career in education rather than research. I struggled immensely as I pondered what I would do when it came time to teach evolution, but considering that I had been offered a job amidst rumors of hiring freezes, I didn’t want to do anything that would jeopardize my position. During the week before the official start of the school year, there were several faculty meetings and department planning sessions. I was pleased to find out that I was going to be sharing a classroom with another Christian teacher. However, when it came time for the evolution unit, I was confused at the enthusiasm this same teacher had for the topic. I listened in as she taught her students that evolution makes the most sense of homologous structures, the phylogenetics of cytochrome c, and the apparent fusion of two chromosomes to make our chromosome 2 (accounting for the fact that we have one fewer pair than chimpanzees)—and that these features pointed to a common origin of all species, including our own. I couldn’t help but wonder, “What was going on here?! I thought she was a Christian, how could she stand up there and twist the truth?”

I figured that she must be one of those people who call themselves Christians, but really aren’t.

But something else concerned me more than my fellow teacher’s apparent divergence from the faith. Although I remember learning about homologous structures and the phylogenetics of cytochrome c, I never realized their significance like I did at that moment. Furthermore, the fusion of chromosomes our ancestors shared with those of chimpanzees was previously unknown to me. Taken together, these three bits of information were admittedly breathtaking; but even so, I wasn’t ready to accept them as anything more than peculiarities.

As my first year of teaching came to a close, I accepted an invitation to attend an info night for Point Loma Nazarene’s Master’s in biology program, designed for working teachers. I was certainly excited at the prospect of getting a graduate degree in biology rather than in education, but I was most excited to have my first taste of Christian education. During the Q & A period, however, that excitement was quickly turned to disappointment: I discovered that the faculty’s position on evolution and natural selection was one of acceptance. I thought to myself, “This must be one of those colleges that say they’re Christian, but really aren’t.” Despite this somewhat bitter conclusion, I went ahead with the application process anyway, and within a few weeks was sitting in my first graduate class. SEASAND was a summer workshop for teachers which we could use as an elective and that year’s topic just happened to be evolutionary developmental biology. Suffice it to say that I was a little worried at what I was getting myself into.

For the first week and a half I experienced serious internal conflicts trying to come up with rational alternative explanations to the apparent common descent of organisms such as fruit flies, mice, and humans as outlined in our textbook, Endless Forms Most Beautiful. I also took one of the professors up on his offer to answer our questions if we were having trouble with the course content as it pertained to our faith—an offer that caused me even more cognitive dissonance: here was a person who claimed to be a Christian and yet he was completely comfortable with saying that Genesis was not a literal creation account. Combining the terms “Christian” and “a non-literal interpretation of the Bible” was just not compatible with my understanding of things. I felt so lost that I did the one thing I should have been doing a lot more of from the start of the class – I prayed.

Through my times in prayer and reflection I discovered many things. For one, I learned that I had been putting God in a box: I was making him fit into my ideas of how he should create life, as if I knew the correct way it should have been done. I also learned that I had been awfully judgmental in mentally accusing the teacher I shared my classroom with, the people at Point Loma’s info night, and my SEASAND professors of only pretending to be “real Christians.” I even judged God himself by thinking that (if I were to admit that evolution were true) he had chosen a hideous way to bring about life as we know it. Finally, I discovered that a major barrier to my accepting evolution was that I didn’t want to say “I was wrong” to the many people I’d argued with about it; I would rather suppress the truth than swallow my pride. Having realized all of this, it was only a matter of days before I decided to stop ignoring the mountain of evidence being laid out in favor of evolution. As ridiculous as it may sound, I felt a weight lifted off my shoulders and a peace settle into my soul.

It’s now been nearly three years since that transitional summer, and to all those who claim a belief in evolution leads to atheism or any of those other unfortunate fates, I am here to say that you are greatly mistaken. I still love Jesus, I still love the Bible, I still attend a conservative evangelical church, and I even still listen to Christian talk radio. But the best part is that I am not an anomaly: there is an incredible group of Christians out there who accept God as creator and evolution as his process, and I have the privilege of working and collaborating with some of them every single day.

Transcript

My name is David Wilkinson, I teach at Durham University in the department of theology, I used to be a physicist and I still am fascinated by science and theology. I became a Christian at the age of seventeen, and at that point Christian faith was very new and exciting to me. I’d also decided to do a physics degree at university; now I’m not that type of person who built a telescope at the age of four or anything of that sort. I did physics at university, I have to admit, because I was quite good at mathematics and therefore I knew I wouldn’t have to work very hard doing physics. I could spend time doing real things at university, such as cricket and other things-- typically British of course.

However what happened for me as I began to study physics at Durham University was that my new-found faith and this new area of science began to enrich each other, and Kepler of course once said that science is thinking God’s thoughts after him. And I think what was happening in hindsight was that as I was encountering the God of creation in and through Jesus, so what God had created became more and more valuable, more and more interesting to me, just as when our children brought back drawings and paintings from their school class. They weren’t great pieces of art but they were put on our kitchen walls because we knew the person who had created them, and because I was being introduced to the God of creation, so the science itself began to live for me.

Another thing was that the science at university level, particularly as one starts to explore relativity and quantum theory, cosmology, is that as John Polkinghorne would say, “It breaks the tyranny of common sense.” This isn’t a mechanistic world of Isaac Newton and those theologians who think that every question is wrapped up. This is an exciting open world of exploration and questions, of freedom both for God to work and the universe to explore. And this became more and more fascinating to me as time went on. My faith enriched my science, and my science enriched my faith. Now that wasn’t always a process where there were easy questions to answer; there were often difficult questions. But I have to say that continually, the science and the faith have gone together and have enriched each other.

My own particular interest then over the years has been how one takes the issues of science and faith and communicates them to folk who aren’t Christians. As I go around the world these days, I find many people who are fascinated by some of the questions that modern science raises, questions such as the intelligibility of the universe. How can our minds understand the universe back to such an early stage? The fact that the universe is very carefully balanced, fine-tuned for the existence of life. The question of human significance in such a vast universe. The sense of awe and wonder as you look not just at the vastness of the sky but also the fact that underneath the complexity of the universe are rather simple, elegant, beautiful laws. And I find that many folk, whether they are people of religious faith or not, find themselves drawn in by these questions that say “Is there a deeper story to the universe? Are these pointers to something that goes beyond science?” I don’t believe that they can prove God in any way, but I do think that they are pointers towards a God who in Christ is the best explanation for all of these different areas.

Off camera: “Let me ask you one question here: you mentioned John Polkinghorne. You studied with him, I believe. Would you tell something about your relationship to John Polkinghorne, and you might begin by saying, ‘John Polkinghorne was my mentor or whatever’. Just a few things about your relationship with him.”

Wilkinson: One of the most important things for me in the science/faith relationship has been those mentors, those great men and women of faith and science who have helped me along the way. Those have been many for me. One of the key people for me in this area has been Sir John Polkinghorne. John was teaching theology in Cambridge, having retired as head of the Cavendish Laboratory in Cambridge, trained as an Anglican priest, and then started to teach theology just as I arrived in Cambridge also to study theology. And what I found in his thinking was a commitment to the rigor of science, and someone who not only philosophized about science but had a feel for science as a working scientist, but someone who’s prepared to take that science and contemporary science and use it in theology today.

If I have one criticism of my fellow theologians from time to time it’s that they’re often stuck in the physics of the 19th century rather than the 20th and 21st centuries. They’re still dominated by this clockwork universe, whereas Polkinghorne and others have taken seriously that the universe is very different. And Polkinghorne with many others have spent time with me answering my questions, being gracious to the type of questions I’ve wanted to push, but they’ve impressed me by showing integrity both towards Christian faith and to science by holding the two together and not compromising on either.

I came to history relatively late. When I started college, I wanted to be an astrophysicist, and things went very well in that direction when internships were arranged for me at the National Radio Astronomy Observatory. They were exciting experiences—quasars and pulsars had only recently been discovered, and NRAO was in the process of designing and building the Very Large Array telescope. I ended up working for several different astronomers, including the late Donald Backer (who discovered the first millisecond pulsar), NAS member Morton Roberts, and Seth Shostak, who later became a leading participant in the search for extra-terrestrial intelligence (in those days, he focused on galactic astronomy). On one particularly memorable weekend, I got to decide which galaxies needed a second look with the old 300-foot radio telescope. Ironically, seeing cutting edge science up close showed me that I probably didn’t want to do it for a living. I decided to try my hand at teaching high school science and mathematics, partly because I thought I might like teaching (I did), and partly as a way of keeping my hand in science while I sorted out my career plans.

Three things happened in the next few years that still influence my life profoundly. First, I got married to a wonderful woman who has always encouraged me to be true to myself. Second, I became interested in the relationship between Christianity and science and joined the American Scientific Affiliation, an organization of Christians in the sciences that owns the oldest journal of science and faith published in the United States. Through the ASA, I met some fascinating people and discovered some wonderful books. Any Christian with scientific training—or even any Christian who wants to think hard about science—should consider joining the ASA.¹ My involvement with the ASA soon led to my third decision: to do graduate work in the history and philosophy of science at Indiana University. There I had the great privilege of studying with the late Richard S. Westfall, author of the definitive biography of Isaac Newton and a leading expert on the Scientific Revolution—the period from Copernicus to Newton, when modern science was born.

Westfall’s lectures are legendary, even many years after his death. They were mainly read from a prepared text, his slightly scratchy voice rising and falling dramatically, such that (as a fellow student quite fittingly said) it was like hearing a fine sermon in church. Several other scholars at Indiana also influenced me, especially Edward Grant, a specialist on medieval science and the universities where it flourished. Grant’s excellent course on the history of science and religion was my first formal introduction to the topic, although I had been reading about it extensively for several years at that point.

Westfall and Grant both provided timely and very helpful comments on my dissertation, which examined the influence of theological ideas about God, nature, and the human mind on conceptions of scientific knowledge during the Scientific Revolution. Focusing on four of the most important figures from that period—Galileo, Descartes, Boyle, and Newton—I argued that an emphasis on divine freedom (in which God’s acts do not always conform to “rational” expectations) was closely linked with the development of modern science. Those thinkers who emphasized God’s freedom (sometimes scholars call these folks “voluntarists”) saw nature as a “contingent order” (to borrow a term from Thomas Torrance) that could be studied only through a combination of reason and experience—a method that Reijer Hooykaas called “rational empiricism.” In short, if God created nature freely, not from rational necessity, then we need to discover how it works by actually studying it, not by dictating what it must be like from pure reason.

Some of my earlier publications developed these ideas more fully. Others focused more narrowly on Boyle, a great chemist who contributed fundamentally to the development of laboratory science and the philosophy of science. For many years I worked with an English historian, Michael Hunter, on a complete edition of Boyle’s works. That is undoubtedly the project with which I am most often associated. More recently I’ve been studying aspects of science and religion in modern America, especially the religious lives and ideas of several scientists who were prominent in the period between the two world wars. The two most famous scientists in this project were both Nobel laureates for physics: Robert Millikan, the person who was mainly responsible for making Caltech such a great university, and Arthur Holly Compton, whose famous experiment with x-rays and electrons is crucial to wave-particle duality, an idea at the core of modern quantum theory.

The people I’m now studying were all almost all Protestants who identified with the “modernist” side during the famous “fundamentalist-modernist” controversy of the 1920s (the only exception, Columbia physicist Michael Idvorsky Pupin, was Serbian Orthodox). We know a great deal about fundamentalist views of science and religion, but very little about modernist views. The more I’ve learned about the modernists, the more I’ve been struck by the magnitude of the gap between these two camps in the decade surrounding the famous Scopes trial of 1925. The fundamentalists rejected evolution and upheld orthodox Christian beliefs, while the modernists embraced evolution but rejected the deity of Jesus, the Virgin Birth, and the Resurrection. There was virtually no middle ground; the historian looks in vain for leading Protestant scientists who accepted both evolution and the Resurrection—someone like Francis Collins, William Phillips, or Joan Centrella. Nothing like BioLogos existed in the 1920s, a fact that (in my opinion) had a deleterious effect on American conversations about science and religion for several decades and still has a sizeable impact today.

Overall, my scholarly work aims to debunk the now-common view that the history of science and Christianity is one of ongoing, inevitable conflict—with science winning a bitter war against religion. Although this view is still widely held by scientists and science journalists, historians of science (the relevant group of experts in this case) have given up this myth in the past two generations. However, the message has been slow to get across to the general public. Not only do I try to dismantle that myth, I do what I can to help replace it with more accurate historical work. Many others in my field are doing similar things, though each of us has something unique to contribute.

Anyone who wants to hear more about the warfare view and its problems, or more of my views on evolution and Christian faith, is invited to listen to an interview that was kindly and expertly done by Michael Dowd. Dowd is not a theist (at least not a theist of any traditional sort), and his idea of “Evolutionary Christianity” is in my view nothing like Christianity, but he let me speak for myself. The result is the best summary of my ideas that you can get in one sitting. I hope that many readers will listen to it—and make comments or pose questions for me in the comments section here. I’ll respond to as many as I can.

Finally, let me tell you where this column will go in the next few months. Does anyone remember the Monty Python film, “And Now for Something Completely Different”? In that spirit, I’ll offer an online course on “Science and the Bible” for several weeks, interspersing informational columns with “assignments” to read a few things by other authors (among them Galileo) that we can discuss here. I leave it to each reader to decide whether or not the “assignments” are worth the time of doing them (some are short, others are longer), but those who do them will probably get more out of the course than those who don’t. And, if this experiment turns out well, I’d like to do more online courses on other aspects of science and religion. Let us know what you think: we’ll be listening.

Next week, Ted gives an overview of and ground-rules for the course: Science and the Bible: Five Attitudes & Approaches.

Notes

1. The American Scientific Affiliation is not connected with BioLogos and, unlike BioLogos, it does not endorse a specific view of evolution and Christian faith.

In my own life, the question “What is Truth?” led me on a path of discovery. I cannot say that I knew I was searching for Truth early in my life, but I was certainly searching for explanations and meaning. The drive to learn how to do things, what made things work, and how things were made so that I might create them myself fueled my first vocational dream to be an engineer like my father. Later I was taken by the visual as well as functional beauty of buildings and structural environments, so modified my dream toward becoming an architect. But while in college, I fell in love. My new mistress was the cell and the incredible choreography of the organelles and intra-cellular structures that danced an intricate ballet of function and reproduction. My love led me on a path that took me into medical research and towards the Truth behind the beauty and wonder of the human body.

In my approach to biomedical research, I always saw myself as participating in a piecemeal revelation of the mysteries of this world. My search was given a new focus while I was in graduate school. I can remember being in the middle of Gross Anatomy my first year, going from cadaver to cadaver for an exam, and suddenly realizing that we could do this, and we could successfully perform surgery, because 99+% of the time whatever we were looking for was in the same location and had the same appearance regardless of the particular body. The beauty and efficiency of the packing of the organs, nerves and blood vessels within the body cavities, as well as their predictability even among vertebrates of different species was a work of art in my eyes. At the level of logic it became increasingly difficult for me to interpret such an observation as supporting the argument for chance and serendipity. The only other alternative to chance would be design or meta-narrative, and that would dictate a narrator. If it were to be a true over-arching narrative, then the speaker must be outside what was being spoken. For me that One is God, the Creator.

It followed that if I were going to seek the Truth about the physical universe, I would need to come to know its Creator. Ultimately this focus on knowing God resulted in a growing understanding of who he had been preparing me to be. And while the change from science to theology seems dramatic, it was really only a shift from one form of healing to another, more holistic form. Still, my call into the ordained ministry was a twelve-year process of experimentation and discernment, rather than a particular transformative event. I purposely use the term “experimentation” because I approached the question of my being ordained as a scientist would—by designing various experiments to test the call. I was seeking the Truth for my life.

This thumb-nail sketch of my faith journey does not describe the full spectrum of influences that drew me to find the Truth in a Person. Relationships tend to lose their enlivening nature when studied under the microscope of science. For example, you may “Google” the name of a person-of-interest in order to learn more about her, but until you commit to the adventure of personal give-and-take, the richness and beauty of that person cannot be fully known. To do otherwise is to learn about an object – the pigments and techniques used by the artist to produce the work, without ever learning the nature of the artist himself. As physicists and mathematicians see beauty in an equation that renders an elegant explanation rather than just a correct answer, Truth is beautiful and becomes known when it is experienced and not just as it is studied.

In his Commentary on the Divine Names (IV, 5-6), Thomas Aquinas taught that beauty in the created order reflects the beauty of the Creator God. The One who in the beginning brought order out of the chaos (Genesis 1) is reflected in the music of Bach and Handel, the painting of Monet and Raphael, the fine tuning of the physical universe and the exquisite detail of the genetic code. When we experience beauty we are touched by the Spirit of Truth and drawn toward a relationship with the One who is Truth. Beauty of itself is not the Truth, but rather a window into the Truth. Just as the Incarnate Lord stood before Pilate and Pilate for a moment uncharacteristically declared him innocent (Luke 23:4), beauty stands before us as we ask the question, “What is Truth?” Pilate walked away without finding the answer (John 18:38). Beauty beckons us into a relationship that will answer our question. If we want to find the Holy Grail of our Quest we must enter into beauty and be guided to the prize. As we engage beauty in this world we find that Truth is not an object or a concept, but a Person – the Beautiful Person, Jesus Christ.