World
One continuous context in which a person learns, builds, proves, earns, owns and belongs — all writing to the same record.
An application is a bounded answer to a bounded question. A world is the surface those answers live on: persistent, extendable by its inhabitants, and consistent from the vault to the simulation.
Its parts include the persistent layer, the devices that reach it, the studios that give it culture and the academies that teach it — but the world is not any of those. It is the fact that they share objects.