Medicine gets “harder” in many ways the longer you’re in it. Sure, some things become easier, but you understand how little we know and how badly some things can end. The illusion of expertise fades shortly after fellowship training– or at least it should. Gradually, it is replaced by wisdom—fluid over crystalline knowledge. You become an expert in your micro-domain. You’ve seen this movie before– you’re teaching newbies how to manage it, and you’re comfortable without being...