I too was always the youngest person on every team... until I wasn't, and it seemed like I went from youngest to oldest in a blink and I still can't figure out

I too was always the youngest person on every team... until I wasn't, and it seemed like I went from youngest to oldest in a blink and I still can't figure out how that can happen. I got into the industry during the .com boom with no degree, without finishing university, so kind of jumped the queue, age-wise, I guess. And yes, I often cringe in remembrance of past-self. I cringe at present self, too, though :-)