I don't know how many operations I performed in my surgical career. I know that I performed 17,000 of one particular type, and 7,000 of another. I practiced surgery for thirty-nine years, so perhaps I performed 50,000 operations. I was successful, and patients were coming to me from all over the world. And one of the things that endeared me to the parents of my patients was the way my incisions healed. No one likes big scars, but they are especially upsetting to mothers when they appear on their children. So I set out early on to make my...