The Importance of Irreducible Complexity

John Lennox and Michael Behe debate Charles Darwin's theory of evolution. They argue over whether there are irreducibly complex systems in the cell. John Lennox: If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous successive slight modifications, my theory would absolutely break down. But top-down is actually a metaphor for the action of an agent in arranging things with a plan in mind.