I'm one of those young-ish MD degree people. High school grad age 17, BA computer science age 18, MS computer science age 19, MD age 23. Medical school was rough. Everybody else in my class had so much more life experience to draw on, which gives you better perspective about aging, disease, family issues and the like. Also, it was hard at age 19 to relate personally to my classmates who were married, had kids, etc. -- or the patients who might be four times my age. I learned how to do it, and got reasonably good at it, but it was hard.

In the end, I gave up clinical practice and went back into computer science. +1 to the poster who said "insert-name-of-faceless-corporation". I work at Google now. There are lots of smart people here. :-)

You mean like Google? It has a tech-only non-management career ladder all the way up to VP-equivalent. It may not be perfect, but it seems to keep people like Vint Cerf around.

I think the reason you don't see that many 50 and 60 year old workers in the tech industry is that at the time they were in college (70s and early 80s) there weren't nearly as many people in computer-related fields as came later. Sure, there may be age discrimination, but there's also demographics going on here.