Joseph: <<Behe's irreducible complexity says that the system must have all the
parts in order to function. It also says that there isn't any way for
it to get its parts serially because nothing will function or have any
use until all the parts are there, placed, structurally and functionally
interfaced according to that unique blueprint. Therefore "evolving"
into the structure and function is not possible. It must be
nanoengineered.>>
The only problem with this is that it can be demonstrated how what appears to be 'irreducibly complex' does not necessary fall into a category of 'not being able to have evolved'. Behe, by calling something irreducibly complex has already concluded that it could not have evolved, yet this only applies to a narrow definition of 'irreducibly complex' and it is by no means certain that what he considers 'irreducibly complex' could not have evolved. The mousetrap comes to mind and I remember seeing a hypothetical pathway which showed how incremental changes can lead to what appears to be an irreducibly complex system that could not have evolved. But that is merely due to the fact that we see the 'end product'.