All at once Jimmy—the most hard-core turned-off low-effort kid in the group—looked up with tears in his eyes and said, “You mean I don’t have to be dumb?” From that day on, he worked. He started staying up late to do his homework, which he never used to bother with at all. He started handing in assignments early so he could get feedback and revise them. He now believed that working hard was not something that made you vulnerable, but something that made you smarter.

