Hot upgrades and remote debugging are front in center in lisp and it has excellent performance. Even so, there's no general consensus among programmers about wh

Hot upgrades and remote debugging are front in center in lisp and it has excellent performance. Even so, there's no general consensus among programmers about whether hot code reloading is preferred to static binaries. The actor model is a choice of implementation. Crash supervision stands out, but that's not necessary and is part of the Erlang culture - let it crash. It's not as important in other languages with a different underlying belief about errors. What features mean BEAM must necessarily be slow? Just to be clear: I really like Erlang. It obviously has different features than a lot of languages and most are aimed towards a certain goal: uptime. But if you can give just a little on that (and you might not have to at all), you can get most of those advantages with a different feature set. I wonder out of the Erlang experiment which are the objectively better features and which are just really cool?