 Rounding off the response to Behe, let us note that, if his arguments are well-taken, then in respects we are into a bigger set of problems than otherwise! His position seems simply not viable given what we know of the nature of mutation and the stability of biological systems over time. When exactly is the intelligent designer supposed to strike and to do its work? In his major work, Darwin’s Black Box, Behe suggests that everything might have been done long ago and then left to its own devices. ‘The irreducibly complex biochemical systems that I have discussed… did not have to be produced recently. It is entirely possible, based simply on an examination of the systems themselves, that they were designed billions of years ago and that they have been passed down to the present by the normal processes of cellular reproduction’ (Behe 1996, 227–8). 