QUOTE : But it must’ve happened!” snapped Vimes. “I told you, I can remember it! I was there yesterday!” “Nice try, but that doesn’t mean anything anymore,” said the monk. “Trust me. Yes, it’s happened to you, but even though it has, it might not. ’Cos of quantum. Right now, there isn’t a Commander Vimes–shaped hole in the future to drop you into. It’s officially Uncertain. But might not be, if you do it right. You owe it to yourself, Commander. Right now, out there, Sam Vimes is learning to be a very bad copper indeed. And he learns fast.