Standing up beyond the critique

Sometimes (it's intermittent), American Idol is on in this house; a few weeks ago, while photographing that precarious icicle, I walked by the screen and snapped this photo. It's Simon, obviously, disagreeing with Ellen, while a singer who has just left her heart on the stage awaits some kind of verdict: Is she good? Does she have a future as an artist? Should she defer her dream, or hold on?

Who is the expert? Whose voice matters? To whom do we-who-are-striving listen to? These are age...