Additionally, reality and virtual reality can get a lot fuzzier than that. If AR glasses become popular, and a protocol exists to swap information between them to allow more seamless AR content integration, you could grab all the feeds coming in from a given location, reconstruct them into a virtual environment, and insert yourself into that environment, which would update with the real world in real time. People wearing glasses could see you as though you were there, and vice versa. If you rented a telepresence robot, it would prevent people from walking through you, and allow you to manipulate objects, shake hands, that sort of thing. The robot would simply be replaced by a rendering of you in the glasses. Furthermore, you could step from that real environment seamlessly into an entirely artificial environment, and back again, and overlay virtual content onto the real world. I suspect that in the next twenty years, the line between reality and virtual reality is going to get really fuzzy, even for non-uploads.
Additionally, reality and virtual reality can get a lot fuzzier than that. If AR glasses become popular, and a protocol exists to swap information between them to allow more seamless AR content integration, you could grab all the feeds coming in from a given location, reconstruct them into a virtual environment, and insert yourself into that environment, which would update with the real world in real time. People wearing glasses could see you as though you were there, and vice versa. If you rented a telepresence robot, it would prevent people from walking through you, and allow you to manipulate objects, shake hands, that sort of thing. The robot would simply be replaced by a rendering of you in the glasses. Furthermore, you could step from that real environment seamlessly into an entirely artificial environment, and back again, and overlay virtual content onto the real world. I suspect that in the next twenty years, the line between reality and virtual reality is going to get really fuzzy, even for non-uploads.