I used to bring stickers and stamps to all and any classes; often to placate students and, of course, to brighten up their day. They would ask for a stamp or sticker in a full sentence, beginning with "May I....". Then something changed. Parents started to buy online. In bulk. This brought change in the way I could dole out pleasantries. Whereas before I'd give an extra sticker for good behavior, or withheld one as a way to discipline a cheeky student; suddenly children woul