This isn't super surprising. For all the Erlang I've used, I always had access to the source, so it'd be simple enough to modify the source (either directly, or through a code transformation), to get access to the nice function I want... it's kind of neat that you can decompile the beam files (at least if debug_info is present) and recompile with different options; and of course, being able to hot load (almost) everything is neat too.