Ha ha ha. Kid gets an assignment to go talk to a human to learn something. He waits until that night and hasn't thought to call or visit an LBS to ask one of the wrenches the question so he comes here to ask a 'real person'.

I'd like to be in that kids class when he announces that he got his information from people named BadKarma and FarHorizon.

Since the point of the exercise was not so much to learn about how a bike works as it was to figure out who to ask to get that information, I'd say he failed. Not that there isn't good info here. The problem is that the kid has no way of determining who, if anyone, knows what they're talking about.