[atemerev]

And goroutines are not distributed, while actors can be transparently deployed across remote physical nodes, both in Akka and Erlang.

[amelius]

How does this work with state? Isn't it inefficient to transfer the state of the actor to another node compared to just letting the actor run on the same machine?

[atemerev]

The API only defines a way to start a new actor remotely.

Now, each actor per actor model convention has to survive restarts. In distributed environment, the state can be persisted e.g. in distributed memory cache / storage (Hazelcast, Cassandra).