Sorry! People like this are completely rational human beings.
Dave - in all seriousness, I don't think I've ever met a "completely rational human being", evo or creationist, or anything else, for that matter.
We all take certain items on faith, in the absence of a reason to do so.
If we all do so (and I agree) then my definition of rational is, a reasonable human being. As opposed to the bloodthirsty brutes that certain people wish creationists were.