Hot code reloading I'd personally grant you as an exception; it's a maintenance tool, not a development tool, and you can largely ignore it until you want it, i

Hot code reloading I'd personally grant you as an exception; it's a maintenance tool, not a development tool, and you can largely ignore it until you want it, if you're adhering to OTP principles. Ignoring supervision, however, is...not wise, if you have -any- sort of reliability considerations (even ones as weak as "I'd prefer it to remain up"; if it's just a one off thing that you'll manually execute again if it fails, meh, fine). Supervision is really, really easy to use, at least for the base use case (creating a good hierarchy, so that processes restart the other processes that should be restarted, is an architectural consideration that can be a bit hairy), and it's truly heartening to grep a log for something you've been running a while, find crashes that indicate issues you want to fix (even simple stuff, like sanitizing inputs), but the system is still running as though nothing happened.