OK, I've been giving this a lot of thought, and I think I have an extention to my
doink...doink...doink theory. Basically, it involves the individual's perception of the universe, which of course is a combination of external sensoral input and internal interpretation of this data. As babies, we're extremely self-centered, with a hyper-inflated senses of our place within the universe. Our internal thoughts are pre-eminent, thus we cannot distinguish fantasy from reality -- to us anything we imagine is every bit as real as something we can see or hear.
As we get older, most of us develop a more mature and realistic understanding of the role we and our imaginations play within the universe. Thus we are willing to accept external input, such as facts and evidence, as important components on which to build our views of the world.
Only some of us don't do that. We continue to believe that our thoughts, imagination, and opinions are pre-eminent. This produces a sort of inflated ego, a form of meglomania if that's the right word. Within such a mind, facts can simply be ignored if they don't fit in with what one already believes. Thus the individual has no problem ignoring evidence...it's probably all just faked, or irrelevant, or something else; whatever, it can safely be discarded at will. And such people can blithely dismiss the opinions of even the most highly trained experts bearing mountains of supporting data. Within their internalized universe, all opinions (especially theirs) are equal to anyone else's. (This is the main theme of my original "doink...doink...doink" post.)
So I think this is what colors at least some of the CT'ers thinking. They still perceive the universe as a place where their own thoughts can contravene external reality. It's sort of a paranoid version of "The Secret" -- if you believe something, you can make it true. Just like a three-year-old, their world consists of equal amounts of reality and fantasy. Only instead of Santa Claus and the Tooth Fairy, they see missiles and concrete cores.