ID the Future Intelligent Design, Evolution, and Science Podcast

evolutionary pathway

Blood clot in damaged blood vessel made of red blood cells, platelets and fibrin protein strands

The Engineering Prowess of the Blood Clotting Cascade

The vertebrate blood coagulation system is a delicately regulated marvel that helps maintain the integrity of the circulatory system. Over 20 years ago, Michael Behe argued it was an example of an irreducibly complex system. Does Behe's claim still hold up today? On this ID The Future, host Andrew McDiarmid speaks with fellow Scotsman Dr. Jonathan McLatchie about his new article series examining recent claims that an evolutionary pathway has been identified for this incredible process. McLatchie is a fellow and resident biologist at the Discovery Institute’s Center for Science & Culture. He holds a Bachelor’s degree in Forensic Biology, a Masters degree in Evolutionary Biology, a second Master’s degree in Medical and Molecular Bioscience, and a PhD in Evolutionary Biology. In their conversation, McLatchie describes how the blood clotting cascade works and why it poses a challenge for evolutionary theory. "Evolution doesn't perform particularly well when you need to make multiple co-dependent mutations," he says. McLatchie explains just how delicately regulated the blood coagulation system is and defends Behe's argument for the cascade, saying it exhibits irreducible complexity in spades. McLatchie also critiques recent proposals by the late biochemist Dr. Russel Doolittle, who claims to show a step-by-step evolution of vertebrate blood coagulation. McLatchie notes that Doolittle helps himself to irreducibly complex components as he attempts to explain its origin, inadvertently helping to confirm Behe's arguments in the process. Read McLatchie's 3-part article series on the blood clotting cascade at Read More ›
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Michael Behe’s Mousetrap on the Edge

On this ID the Future Lehigh University biologist Michael Behe dives deeper into A Mousetrap for Darwin. Behe and host Eric Anderson pivot to the new book’s section defending Behe’s earlier work, The Edge of Evolution. In that earlier book, Behe reviewed hard data from evolution studies of malaria parasites, HIV, and E. coli, showed that blind evolutionary processes face severe limits as to what they can build, and argued that intelligent design was required for the origin of life’s great diversity. In this new conversation Behe touches on some of the attempts to refute that argument and suggests why those refutations fail. For a more in-depth look at his defense of The Edge of Evolution, get your copy of A Mousetrap for Darwin: Michael J. Behe Answers His Critics and check out Part 3 of the book.