> Every time I read Elixir code such as the one in this link, I get worried and stressed due to the lack of type annotations. I guess my mindset is "write code

> Every time I read Elixir code such as the one in this link, I get worried and stressed due to the lack of type annotations. I guess my mindset is "write code that never crashes", but then BEAM apparently instills the mindset of "let it crash", which gives me anxiety tbh. I don’t think the “let it crash” philosophy is about types though. It’s more about not needing to defensively handle every edge case due to fears of your program crashing. Crashing due to ending up in an exceptional state is a feature in Erlang/Elixir, but if a function expects a number and is passed a tuple, that’s still a bug.