Err is human.

I have a friend I used to try to debate. She was strident, mean spirited and without any depth. She always thought she won every argument in which she was engaged because no matter how inane or wacky her argument, if she got the last word in, she felt like she "won". What is so sad is people soon eschewed her, she was alone considered a crackpot by everyone except herself. This is one of the sad self delusions that too many engage in. When I find myself going down that path, I shut up. I just don't do it soon or often enough.