[AndrewC]

In the flagellum case, the "scaffolding" is its secretory function

You even give more credence to the author's argument than he does. He only suggests a possibility. The word is credulous.

[VadeRetro]

You even give more credence to the author's argument than he does. He only suggests a possibility. The word is credulous.

Credulous? For not resorting to the "My Invisible Friend" explanation just because a particular non-magical scenario isn't nailed down? Shouldn't claims involving supernatural beings be the ones that have to be nailed down solidly?

[Stultis]

You even give more credence to the author's argument than he does. He only suggests a possibility. The word is credulous.

No, actually, the word is "irreducible complexity," and the relevant claim is that IC systems cannot have evolved in any stepwise, naturalistic fashion. Therefore even a mere "possibility" (which you acknowledge) of a stepwise path, even by means of a "just so" story, is a refutation of the claim that this system must be attributed to "Intelligent Design" because it is "irreducibly complex".