[eru]

Erlang was fun to use!

But even with Erlang, concurrency is hard. Any single process's data is immutable, but if you split a process in twain, the resulting union can behave as if it had mutable state.

And let's not forget about ETS (term storage), which is basically a mutable hash table that you often have to use to get anything done.

In any case, I agree that Go did _not_ improve on Erlang.