Well you dont have to tear your plumbing apart to know the toilet flushes! But I say folly in a good sense I know it sounds patronizing its just that I realize your desire for the truth but to what extreme! You say you dont trust the flushes, but can't you just get past your own distrust of such a simple thing to just flush your self with out dissecting animal entrails! It is a funny image! Sorry, I see you are sincere so good luck with it!