In this series, Darrel Falk and Ard Louis carefully examine the idea that certain biological structures are irreducibly complex—an idea put forth by scientists such as Michael Behe and Michael Denton. After providing a brief background on Behe and the beginnings of the Intelligent Design movement, Falk dives into Behe’s mouse trap model. He then reveals the scientific and theological problems associated with design inference. The series finishes with a discourse about the bacterial flagellum (another classic example of an irreducible structure). There is, Falk and Louis confirm, no sound reason on the basis of Christianity or science to assert that divine intervention was necessary at specific points in the unfolding creation process.