Essentially because it wasn't a well-thought out language, but a hack, it became used widely, but that lack of thoughtfulness shows on larger projects quite a b

Essentially because it wasn't a well-thought out language, but a hack, it became used widely, but that lack of thoughtfulness shows on larger projects quite a bit. It is a hack that need to become more formalized with time, but it hasn't quite done that. Whenever I still see "needle" and "haystack" in documentation I think "Wait what is this? Oh right..." >Facebook uses it Not really, I mean Facebook doesn't use the PHP that a common person uses.They've made so many changes and their codebase is so huge. Facebook also uses the D programming language, HipHop, and probably more tools than I'll ever know. Wasn't chat at Facebook first written in Erlang?