I'm a been-retired-for-4-years-but-only-45 engineer, initially Ph.D. in astrophysics. I'm back to my first passion, astrophysics, and I'm trying to learn some bits of AI, too. So both for coding (AI) and data manipulation (astrophysics), I've joined StackOverflow to supercharge my learning of Python and its zillions libraries. I sometimes spend some times on other boards, like physics, since General Relativity has always been my favourite class, and music, since I've spent some times in a professional music school for a full-time training. :)