A lot has happened to the two greatest careers imaginable (to me) since I fell in love with each of them. When I started medical school 53 years ago with the intent of becoming a surgeon, such a career promised interesting work, a middle-class income and a respected role in society. When I got certificate number 1782747 some 52 years ago, aviation was in a heady period of expansion. Though I wasn’t on track for an airline career, I remember Pan American World Airways coming to our undergraduate campus a few years earlier to recruit young (mostly) men to become pilots. Some of the applicants had never been in an airplane. By the time I got out of medical school, some of my college classmates were flying Boeing 707s around the globe.