Generally in an Actor/Agent based systems messages are still passed to specific 'entities' rather than using a Pub/Sub bus where 'entities' are only coupled thr

Generally in an Actor/Agent based systems messages are still passed to specific 'entities' rather than using a Pub/Sub bus where 'entities' are only coupled through the messages they send and those they subscribe for. I think the article describes the latter. Although I've written buses in the past that let the user address messages to different 'entities' and groups, even ad hoc groups defined by features like spatial locality.