Behe was very cordial, but…it’s been 25 years since Black Box, and “irreducible complexity” is, still, not a well-fleshed-out idea.
I believe I asked for a quantifiable standard for “this thing is designed” five or six times, but did not get one, and just as many times he used a phrase like “in my mind” or equivalent.
The takeaway, I think, is that this is a completely subjective, and therefore unfalsifiable idea. Not that this is revelatory. I’m just honestly surprised in spite of myself that there isn’t an answer to “but how do you quantify that distinction?”
I do plan to have him on again, though probably with a different focus. It’d be pointless to rehash this same discussion.
And this is a very minor point, but jumped out because a few weeks ago, Dr. James Carter made exactly the same mistake: Where did creationists get the idea that the Cit+ phenotype was due to a promotor duplication rather than a CitT duplication? Because that seems to be A Thing.