[bjourne]

Emacs is an open/unsafe architecture. Whatever I write in Lisp in my .emacs file becomes part of my implementation. It's on the exact same level as the Lisp code rms writes which is bundled with the releases.

Vim scripts like Chromium and Firefox plugins are inferior to their host processes. They can only modify the application behavior through a set of (supposedly) safe api calls. Since Elisp packages aren't second class citizens, like Vim scripts, it changes everything.