Dem Nichts ein Gesicht geben
Divide an object which needs to be accessed from more than one address space into two interdependent half-objects (one in each address space) with a protocol between them. c2 
The space of temporarily recursive interactions between two or more people. (Interpersonal Space)
In each address space, implement whatever functionality is required to interact efficiently with the other objects in that address space. (This may result in duplicated functionality, i.e., implemented in both address spaces.) Define the protocol between the two half-objects so that it coordinates the activities of the two half-objects and carries the essential information that needs to be passed between the address spaces.
> […], one for “requests for resources, help, etc.” and the other “Offers to the General Good”. The Semantic Matchmaker will make useful loose couplings, and very large, very robust systems can be made.
Tree actors can be put in a hierarchy with parents and children. The tree Pawns maintain their own hierarchy that mirrors the actor hierarchy.
There is relational space between people. This "space" is made up of the connections and their reciprocal influences on the persons.