The hardest question for anyone who takes responsibility for what he or she does is, What if I turn out to be average? - Atul Gawande

If to be human is to be limited, then the role of caring professions and institutions - from surgeons to nursing homes - ought to be aiding people in their struggle with those limits. Sometimes we can offer a cure, sometimes only a salve, sometimes not even that. But whatever we can offer, our interventions, and the risks and sacrifices they entail, are justified only if they serve the large aims of a person's life. When we forget that, the suffering we inflict can be barbaric. When we remember it, the good we do can be breathtaking.

You want people to make sure to get the stupid stuff right. Yet you also want to leave room for craft and judgment and the ability to respond to unexpected difficulties that arise along the way.

It is unsettling to find how little it takes to defeat success in medicine. You come as a professional equipped with expertise and technology. You do not imagine that a mere matter of etiquette could foil you. But the social dimension turns out to be as essential as the scientific — matters of how casual you should be, how formal, how reticent, how forthright. Also: how apologetic, how self-confident, how money-minded. In this work against sickness, we begin not with genetic or cellular interactions, but with human ones. They are what make medicine so complex and fascinating. How each interaction is negotiated can determine whether a doctor is trusted, whether a patient is heard, whether the right diagnosis is made, the right treatment given. But in this realm there are no perfect formulas.