And there's an old saying in surgery which really is true: The first 10 years when you're in practice, you really learn how to operate. I mean, you do know how to operate, but you're getting the finer details, becoming more confident. The next 10 years, you know when to operate. You manage to get the judgment on deciding when to operate in tough situations.
And the last 10 years, which is probably the most important, is you when know not to operate, because what I do, if I have to operate on somebody, I mean, sure, I can help them very much, but I could also hurt them very much.