[namelosw]

The problem is like 'is Erlang an Actor language?'. The answer is yes.

Carl Hewitt developed the Actor model based on Smalltalk in the 1970s.

Joe Armstrong created Erlang in the 1980s, which he didn't know the Actor model at all at that time. Erlang doesn't even have the concept of Actor, it accidentally implemented Actor model by the elegant design of processes.

But when it comes to the Actor model nowadays, Erlang is basically a must-mention language, although the intention wasn't about Actor.

[ProfHewitt]

The following article has a critique of Erlang as an Actor language:

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3418003

[ProfHewitt]

Actors were influenced more by Simula-67 than by SmallTalk'72, which was a byte-stream language. However, neither language had adequate constructs for concurrency.