Thats exactly what I meant! I am in my 50s and I just retired after nearly 30 years in software development, much of it in cutting edge AI. As you say, after a

Thats exactly what I meant! I am in my 50s and I just retired after nearly 30 years in software development, much of it in cutting edge AI. As you say, after a while, you've seen everything and its not quite as interesting the second time around. I still enjoy coding and reading stuff, just not for a living. I get to do whatever I want which is a reward in of itself. Knuth has a wonderful take on how he is spending his retirement that I find inspiring: https://www-cs-faculty.stanford.edu/~knuth/email.html https://www-cs-faculty.stanford.edu/~knuth/email.html ...my role is to be on the bottom of things. What I do takes long hours of studying and uninterruptible concentration. I try to learn certain areas of computer science exhaustively; then I try to digest that knowledge into a form that is accessible to people who don't have time for such study.