Shared object
Different participants can develop relations to the same material possession or a closely related practice. Staff examine their contributions before proposing a reply or encounter. The shared reference gives both people something specific to inspect or discuss.
A custodian contributes a camera. A visitor makes a portrait with it. Another recognizes a repair. Their relations differ even though the passport provides a common address. Staff can offer an exchange concerning the relevant question without combining every associated account into a single public history.
Shared objects can connect otherwise distant interests. Correspondence, address, passport preserve the practical reference. Copies complicate the case usefully: readers can share a work while maintaining different copy-level histories. Staff specify the actual shared relation.