There has for some time been a schism in medicine between the doers and the thinkers. I’m a doer, a surgeon. My friends include a lot of thinkers, oncologists, infectious disease, primary care, pediatrics. I also have “thinker-friends” that are often more like me than their thinker brothers and sisters. They are often referred to as interventionalists – cardiologists in the catheterization laboratory or gastroenterologists with their scopes.