[yellowapple]

> Edit: Actors doesn't run concurrently.

Why not? That's literally the whole point of the actor model; actors are definitionally units of concurrent computation. That's exactly why Hewitt based the actor model on how e.g. particles interact in physics - those interactions necessarily being concurrent.

That is:

> The similarity of Erlang's processes and the actors, defined by Carl Hewitt, is accidental as stated by Joe Armstrong multiple times.

Just because processes accidentally behave like actors doesn't mean they ain't actors.