I have been using Common Lisp since about 1982 and it is probably my favorite language both because I am used to it and because old code usually runs forever wi

I have been using Common Lisp since about 1982 and it is probably my favorite language both because I am used to it and because old code usually runs forever without modification. That said, I now also often use Racket and Swift that both seem fresher, but don't have the extreme stability of CL. I often use Common Lisp libraries that haven't been touched by the creators for 5 or 10 years (or more). I once wrote up a little rant about future software being ancient, with no changes for centuries. What might the far future be like? I was imagining a world where security and robustness were considered much more valuable than a never ending flow of new features. Could popular programs developed over many centuries evolve to a point where it made no sense to modify them?