While I'd like to say I haven't seen among the younger generation of doctors the arrogance once taken for granted among those from my father's, and my, generation, I have had one disappointing encounter.

How do we reconcile our commitment to excellence in health care with the inevitability of medical errors? How can we be comforted while accepting our fallibility as humans? The words of Voltaire -- "Perfection is the enemy of the good" -- point to one possibility.

I am heartened by the dawn of what is called "patient-centered care." This is far more than a slogan; it is a deep and abiding commitment by caregivers to put the patient first, foremost, in a medical care system too often organized for the convenience of caregivers and administrators.

While leaving that day I saw the director of the operating room walking towards me. What would he say? The possibilities raced across my mind.

Since January of this year, more than half a million people have seen my talk. A small number of people have (rightly) taken me to task for not doing better. But most have been incredibly supportive of my call for health professionals to talk openly about their mistakes.