
Until a decade ago, there was one way to perform a heart bypass surgery: by stopping your heart. The surgery, called Coronary Artery Bypass Grafting, is a heart
attack prevention method that basically calls for a doctor to install a
new tube for blood to flow to the heart because the old tube is clogged
from too many cheeseburgers. Because the heart needed to be stopped to install the new tube, the surgery often led to complications.
There was good news. At the turn of the millennium, doctors figured out a new way to do the surgery without stopping the heart. This would help a whole lot of people live complication-free lives
and not die from heart attacks — if doctors could learn to do it. But the tricky new CABG surgery took practice. A group of business researchers started following heart surgeons
around the U.S. as they practiced the technique in order to answer a
pressing question: How do people learn from their mistakes?









