When my daughter Jora was in high school, she went to a talk I gave on the adolescent brain, during which I pointed out that high school grades don’t predict success very well. On the way home she said, “Great talk, Dad, but I bet you don’t really believe that bit about grades.” I assured her that I did. To prove it, I offered to pay her $100 if she got a ‘C’ on her next report card — in any subje