Your right that there is no parallelization improvement, but it does not reduce parallelism either, its just a different(imo easier) way to think about concurre

Your right that there is no parallelization improvement, but it does not reduce parallelism either, its just a different(imo easier) way to think about concurrency. Because it is easier for me to think about it is easier for me to see where things will contend the same resource and actually helps me improve potential parallelism. Once you recognize a particular opportunity where SMP can speed things up, you can stray a way from the actor-model a bit and have multiple threads receiving on your message queue, or if that isn't possible, you can just add more actors and split up the data better.