Comment by Jtsummers

Go pulled more from the ideas of Hoare's Communicating Sequential Processes (CSP) than it did from actors. In particular, communication is synchronous (excepting the use of buffered channels, though even there if the buffer is full the sender blocks) and it uses channels, while the go routines themselves are anonymous and cannot be directly communicated with (to the point you can't even get a handle for them).

This is in contrast to, say, Erlang which is closer to actors than CSP, with its named processes (actors) and their mailboxes and no channels (though you can use a process as a channel).