Re: Maths Sux
The only thing I can prove is Pyrrhonism, the extreme skepticism that posits that we presently can not be certain of the truth of any position, and therefore you should suspend judgment. In your case, it's a double edged sword. While you can press me in to admitting that an empirical standard for belief is a matter of personal preference, I can also show it's also the case for any other belief. So asking me to prove positivism or any other conceivable belief is a futile exercise, but this does not mean I don't have other reasons for operating as though it were mostly true.
But for the record, I am not asserting positivism. Rather I am asserting a personal preference for experience, and my reason for doing that is it's apparent utility. Illustrating its apparent utility doesn't require a detailed proof, because any idiot understands the utility of not touching fire again if they were burned by it in the past.