Joined: May 2002
In the "yes, IDists have in fact argued that IC precludes the existence of precursors with other functions" category:
There seem to be no obvious evolutionary forebears in nature, and certainly no fossil record, to explain how such a machine might have been selected for through a series of random mutations in some simpler flagellum-like structures.
"If you don't have intermediate structures, it could mean one of two things, " Behe said. "Either we just haven't found them, or they are not there. It's a good bet, with these biochemical machines, that they aren't there."
Nature's diversity beyond evolution
Debate over 'intelligent design'
Carl T. Hall, San Francisco Chronicle
Sunday, March 17, 2002