"Behe predicts that scientists will not uncover a continuously functional Darwinian pathway from a simple precursor to the bacterial flagellum and, moreover, any detailed evolutionary pathway that is articulated will presuppose other irreducibly complex systems. How does one test and discredit Behe�s claims? Describe a realistic, continuously functional Darwinian pathway from simple ancestor to present motor. The flagellum might still be designed, but Behe�s means of detecting such design would have been falsified."