No, MOD has nothing to do with it. To see that, take a case in which the first number is much larger than the second number, e.g., 100 and 2. The correct answer is 98, but 100 mod 2 is 0.
i actually only criticize some of the things some people say, lets be realistic. and most of the time, its in reply to someone criticizing me! i just defend myself well. what also sets it off is when someone says something just to say it, rather than because they mean it. its like theres a plague, filling our language with meaningless, mindless phrases like 'i hate to say it, but...' proceeds to say thing. i catch myself doing this all the time, and adapt my style accordingly. but itll drive me crazy if i dont point out when i see other people doing it! if your back pockets sticking out, im going to tell you! and probably sarcastically, but that makes it no less of a friendly gesture, essentially.