When I was working at Magic Leap, and people asked me why I thought that was a good idea, I would ask the rhetorical question: “do you really think that twenty years from now everyone is still going to be going around all day staring at little rectangles in their hands?” At the time it seemed obvious to me that the answer was no. Reader, I have changed my mind. Twenty years from now, everyone is still going to be staring at handheld rectangles.