The problem is, stupid people just don't have the neural hardwiring necessary to enable them to understand rational arguments - if they did, they wouldn't believe in the infantile mythologies that always attract the simple-minded. My own preferred approach is to agree with creationists. As evolution is impossible (and a terrible lie invented by Satan to confuse the unwary) the next time they have a bacterial infection we give them penicillin. Because, if evolution is a lie, bacteria can't have evolved resistance. And so, in just a few decades, the problem of stupid people in the USA will be conclusively solved.