Understand that sexual orientation is not a matter of choice, but your religion is. You're free to believe in any irrational idiocy that makes you ha… - Aron Ra

If the Bible is interpreted literally, then it is clear that its authors believed that the world was a flat disc, which was originally said to be covered by a giant crystal dome. It was a common belief at the time in all the neighboring regions. But it was still wrong. The Biblical authors obviously knew nothing about the real state of this world nor the worlds beyond this one either. But we know what lies outside our atmosphere. And that proves that there is no water above where the firmament isn't, and no windows to let it drain in -if there was either water or firmament there.

Creationists may refuse to acknowledge geologic time scales, and cannot admit that any new organism might be unable to interbreed with the stock from whence it came because their sacred fables say they were “created each after their own kind”. But of course they can’t say what a “kind’ is either, because it’s impossible to identify any point in taxonomy where everything that ever lived isn’t evidently related to everything else. So they largely ignore phylogenetics altogether. Creationists have to deny macroevolution for the same reason they have to deny transitional species, not because these combined realities can only indicate an animal ancestry, but because either one alone proves that such is at least possible, and creationists are not permitted to admit even that.

The pledges come from a believers’ standpoint. The country needs to earn the support of its citizenry. You can’t extort it. You can’t get people indoctrinated by always saying every morning before class where they’ll never question what you’ll do.