>It's based in the concept that you should go with your tools to teach. No, it's based on the reality that other people never return tools. And the dumb fuckers damage them. I remember a next door neighbor, destroying my father's expensive ratchet screwdriver -- the neighbor used it as a cold chisel to break up concrete, by bashing the end of the handle with a hammer, completely destroying the ratchet mechanism. I've still got the screwdriver -- the ratched won't engage properly, and slips. But the neighbor is long dead, so that's one good thing.