Fair enough! But the point stands, no? I pointed out emacs' age to note how users expectations of editors have evolved over that time. Certainly there is older

Fair enough! But the point stands, no? I pointed out emacs' age to note how users expectations of editors have evolved over that time. Certainly there is older software -- but is there any other user-facing software that has survived such a dramatically shifting landscape? That is the part I find unprecedented (and the part relevant to GP).