Well, when you put it that way, it did sound a bit cruel. "Uh, maybe? It might just be a job, they don't seem to mind except when you make them work too hard. Like golems. Except-- well, some golems did mind, I guess." He frowned. The ethics of imp slavery were not something that Carrot had ever really considered, especially since imps were so unpleasant. But...Vimes had been quite cruel to some of his Dis-organizers.