As nodes engage in one-by-one conference dialoge.
Each active speaker speak by directed edge toward a receiver.
This receiver becomes a current object.
And "self" is transferred to this receiver.
Self is traversing through nodes of current objects.
A democratic egocentrism of this process in the world of the object model.
There is a degree of introspection to this structure.

Self is the implicit receiver.
It's privacy is garded up to self, i.e. only monologue when private.

To master this world, to be able to dictate exactly what its objects should do
You need to know where self is at, at any given time.

The one holding self has the power of execution.
implicit or explicit receivers.