You want to ensure people can do it right 99 percent of time. When we have to fire one of our surgical trainees, it is never because they dont have the physical skills but because they dont have the moral skills - to practise and admit failure.

We've created a multitrillion-dollar edifice for dispensing the medical equivalent of lottery tickets - and have only the rudiments of a system to prepare patients for the near certainty that those tickets will not win. Hope is not a plan, but hope is our plan.

Making systems work is the great task of my generation of physicians and scientists. But I would go further and say that making systems work - whether in healthcare, education, climate change, making a pathway out of poverty - is the great task of our generation as a whole.

When we, doctors, ask patients what their priorities are if time is short, what we do is we use what is available to us - whether it's geriatric care or palliative care or hospice care - to make sure they're living the kind of life that they want to live.

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.

Expertise is the mantra of modern medicine.

The big thing that's happened is, in the time since the Affordable Care Act has been going on, our medical science has been advancing. We have now genomic data. We have the power of big data about what your living patterns are, what's happening in your body. Even your smartphone can collect data about your walking or your pulse or other things that could be incredibly meaningful in being able to predict whether you have disease coming in the future and help avert those problems.