So far, I think the dumbest thing I've done today is to try to talk rationally to someone who starts a discussion by randomly guessing at the truth without a shred of research. Still the cost is low, so I figured it was worth a try. I read one of your posts and thought you weren't a totally unreasonable person, but maybe just slightly misguided. Your second reply convinces me, however that there is no hope of a useful discussion in your case.