It's a truism in American politics that everyone believes the other side is completely nuts. Delusional. Certain about facts that just simply don't exist. This is a simplification, sure, but it's also kind of a meta-statement about a different serious problem in American politics, which is the myth of "balance," an insistence that "both sides do it." But both sides don't do it. The fact is that only one political party right now seems to exist in a world of fantasy and delusion.