They don't need to put all of the world's information locally, just the relevant bits. It doesn't need to know every celebrity's full history for example You c

They don't need to put all of the world's information locally, just the relevant bits. It doesn't need to know every celebrity's full history for example You can have the basic stuff on-device with the "smarts" of an LLM that can have conversations with the user and have context to previous questions. The other stuff can be fetched from the cloud (with the user's permission OFC) and optionally saved locally.