Checklists turn out...to be among the basic tools of the quality and productivity revolution in aviation, engineering, construction - in virtually every field combining high risk and complexity. Checklists seem lowly and simplistic, but they help fill in for the gaps in our brains and between our brains.

We yearn for frictionless, technological solutions. But people talking to people is still the way norms and standards change.

Over time I learned that there are two very different satisfactions that you can have in your life. One is the satisfaction of becoming skilled at something. It almost doesn't matter what the terrain is. There is a deep, soul-feeding resonance in mastery itself, whether in teaching, writing a complicated software program, coaching a baseball team, or marshalling a group of people to start a new business.

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.

Go back to the '30s, '40s, '50s, and it was the discovery of heroic interventions, the ability to cure people with penicillin or do an operation to stop disease that was what saved the day. Primary care physicians couldn't do all that much that really demonstrated a difference. The people who control and work with you to control your blood pressure, they're not rewarded for doing that or to be innovative about doing that. So, the result is half of Americans have uncontrolled high blood pressure, despite seeing clinicians.

I said there are at least two kinds of satisfaction, however, and the other has nothing to do with skill. It comes from human connection. It comes from making others happy, understanding them, loving them.

After readinf some essay on the nature of human fallibility, I was very aware that we are the recipients of a huge amount of discovery over the last century. Medicine exemplifies this. And that has transitioned us from a world in which people's lives were mostly governed by ignorance to one that's constrained by ineptitude. A century ago, we didn't know, for instance, what diseases afflicted us, what their nature really was, or what to do about them. And that has changed.