I had a professor in college who, when challenged with that kind of "but we can't knoooowwwww" argument, would reply "Alright, you are correct. But for the sak

I had a professor in college who, when challenged with that kind of "but we can't knoooowwwww" argument, would reply "Alright, you are correct. But for the sake of not being an insufferable twit, let us assume that 1 = 1 and move on..."