I think the more accurate thing to say is Elixir allows you to rebind variable names whereas Erlang doesn't. Elixir will allow you to pin a name though such tha

I think the more accurate thing to say is Elixir allows you to rebind variable names whereas Erlang doesn't. Elixir will allow you to pin a name though such that the pattern matches against the already existing variable name's value. Talking about mutability I think confuses this.