I had to explain to Kat, my five-year-old, that “I know” is not the best response to a compliment. But that got me thinking. Wouldn’t it be nice if you could say “I know” when someone complimented you without looking like a jackass? I mean, if you feel proud of something, why do you have to show all this false humility? The things you can get away with in kindergarten . . .