Ryan holiday: As a parent, there is no word you hear more. Why? Why not? Why can i? Why do i have to? Why does it work like that? It's annoying, to be sure, but you must never discourage this. Society improves when we ask questions. Wrongs are righted only when subjected to scrutiny. What is not chal ange remains comfortably ensconced in orthodoxy masquerading as tradition. We want our kids to make the world a better place. And that can't happen if they are complaisant or credulous.