I think the key feature of great AR is that we don't have it yet, so there are no limits on what capabilities you can imagine it could have.<p>If you instead think of each dreamed about great AR application as a smartphone app, an uncomfortable realism creeps in about how apps work and that someone has to build and integrate them<p>"But if I could put on glasses and see what’s going on with my car and then be guided through that process, that would be cool. "<p>It would. And if we built that smartphone app, it would be really useful today. But doing that, for the general case of "what am I looking at, and how do I fix it" is AGI-hard