> Well actually Erlang is not single-threaded it is multi-scheduler and multi-process.

I think the parent and you are talking about separate things.

Erlang the language is single threaded. Erlang the language has no concept of threads. That's what I think the parent was referring to, since he writes "concurrency model".

The BEAM Erlang VM, on the other hand, uses multiple schedulers and multiple threads, pretty much as you describe. Most people regard that as a characteristic of the VM _implementation_, not the concurrency _model_.