Unwilling to break down the world into handy funnel-sort chunks for processing by the determinedly pig-headed. Brandioch is often willing to dismember such theses, byte by byte. Hell, I do crosswords sometimes, too..
If you find my prose unintelligible, or just indigestible - feel free to ignore. That's the only EULA.
Ashton
PS - as to your actual query:
Proof exists only in mathematics, and then only within the rarefied environment / class of a series of stated axia. In ANY other area of human involvement: logic alone, is never enough. Except for slogans, of course. They don't teach debate anymore, do they?