Report, if you have a problem with this page“ In the abstract, it might be tempting to imagine that irreducible complexity simply requires multiple simultaneous mutations - that evolution might be far chancier than we thought, but still possible. Such an appeal to brute luck can never be refuted... Luck is metaphysical speculation; scientific explanations invoke causes. ”
Michael J. Behe
From : Darwin's Black Box: The Biochemical Challenge to Evolution