Life is choices, and they are relentless. No sooner have you made one choice than another is upon you.

I talked to over two hundred patients and family members about their experiences with aging, serious illnesses, and the big unfixables. But I also spoke with scores of physicians, and especially geriatricians, palliative care doctors, hospice nurses, and nursing home workers. The biggest thing I found was that when these clinicians were at their best, they were recognizing that people had priorities besides merely living longer. The most important and reliable way that we can understand what people's priorities are, besides just living longer, is to simply ask. And we don't ask.

The possibilities and probabilities are all we have to work with in medicine, though. What we are drawn to in this imperfect science, what we in fact covet in our way, is the alterable moment-the fragile but crystalline opportunity for one's know-how, ability, or just gut instinct to change the course of another's life for the better.

Just look at the list of who the lowest-paid people are. Pediatricians are at the bottom. You would also look at internists. You would look at psychiatrists. You would look at family physicians, HIV specialists. People who take care of chronic illnesses by seeing people carefully over time, those are the people who get the least money. The people who have the most are people like orthopedic surgeons, interventional cardiologists. And my point isn't that there is something wrong with heroism.

What is the alternative to understanding the complexity of the world?

Expertise is the mantra of modern medicine.

As economists have often pointed out, we pay doctors for quantity, not quality. As they point out less often, we also pay them as individuals, rather than as members of a team working together for their patients. Both practices have made for serious problems.