Forget the Rolex! Give me a Pebble!

It all started in the 1880's with the development of the motion picture camera. We could stare at a blank wall and watch something that happened in the past. Since then, we have had an obsession with screens. Movie screens, television screens, computer screens, smartphone screens. With the announcement last month about Google's Project Glass, the question now is, what won't have a screen on it?