Audrey, although I agree with you about how annoying it can be in general to deal with ill-mannered people anywhere, I feel it takes more personal power to take responsibility for one's mistakes than not to. I can't ask this guy to be civil if I lose my temper and not be civil myself. Apologies aren't at all precious - they cost absolutely nothing.
I stand by what I said. How I said it is why I apologize.
I'm walking away from the thread because I'm intractable on the subject, and I made my point. Apologizing for making that point in a way that negated my own self-respect is entirely appropriate for me.
1. While sitting at your desk, lift your right foot off the floor and make clockwise circles.
2. Now, while doing this, draw the number "6" in the air with your right hand.
3. Your foot will change direction.