Emacs is almost infinitely tweakable, but it's also very stable, so your tweaks tend to have long-term value. This seems to go against the grain of most nontech

Emacs is almost infinitely tweakable, but it's also very stable, so your tweaks tend to have long-term value. This seems to go against the grain of most nontechnical software, like Firefox or Microsoft Windows, where there is no stable UI and new versions typically break customizations with no recourse.