Hi Neil,
Yes; but you know, I've had teachers do that to me, usually when I was solving something on the blackboard. Although it was irritating, I later realized he was helping me figure it out on my own. As I say, anything you can learn from is worthwhile.
Have fun!
Mark


> what a lot of people were incensed with, I feel, was the impression of hearing "You are a moron - you don't know the answer. I do, but I'm not going to tell you (or anyone else)". Hardly a constructive attitude. I agree however, that some of the hysterical comments that followed the original post were way OTT. Just thought I'd share that before I leave for a sunny Parisian bar...