jboner/akka — comment on commit a2a09ec5a922c5a766472a054949cd83aba378ce
File: akka-docs/general/addressing.rst line 57
By pvlugter:

The unresolved/endpoint/... actor ref is like a remote actor ref. You don't know if there really is an actor on the other end. Watch/unwatch really need to be async (everything is, right?). For me, this fits in with the general transparency idea and that actor refs should all be considered as distributed by default, not locally known and resolved by default.