I think there's something to that, though - "Object-Oriented" has been used to mean many things.
Alan Kay's definition, more or less: "OOP to me means only messaging, local retention and protection and hiding of state-process, and extreme late-binding of all things. It can be done in Smalltalk and in LISP. There are possibly other systems in which this is possible, but I'm not aware of them."
Erlang has processes with local state communicating via messages, and can do late-binding with pattern matching and hot code loading. It just disposes of classes and other such baggage.
Ok, but there are plenty of things that aren't message passing in Erlang, whereas, say, in Smalltalk, pretty much everything goes through messages, no?
Yeah, I've heard or read Joe Armstrong talking about how Erlang process are like 'objects', but his brief cryptic comment needed something more. And I still disagree with it, because there's tons of interaction in Erlang that is not message passing.
Alan Kay's definition, more or less: "OOP to me means only messaging, local retention and protection and hiding of state-process, and extreme late-binding of all things. It can be done in Smalltalk and in LISP. There are possibly other systems in which this is possible, but I'm not aware of them."
Erlang has processes with local state communicating via messages, and can do late-binding with pattern matching and hot code loading. It just disposes of classes and other such baggage.