When I was an 18-year-old college freshman back in the fall of 1996 I remember the admissions counselors telling our incoming class something that seemed extraordinary. You’ll likely change careers at least five times in your life, regardless of your major, they said. Not jobs. Which I think any reasonable person anticipates changing at least a few times. But careers. Like one day you’re a teacher in the humanities, say, and then suddenly you work as a corporate executive at a Fortune 500 company. Not exactly an obvious career pathway. And here I had thought the whole point of me going to college was so I could get the requisite…