Right – how’s your physics? I’m feeling much better today, and my fears over Chopper turned out to be entirely unfounded. He’s a good friend, and when I told him I was embarrassed about what happened on Monday he told me he just accepts it as he accepts any other aspect of my CP. Anyway, changing the subject entirely, I think I’ll just direct you here. I don’t understand any of it, but check out the authors. Go Mark! Go Mark!