For the punchline, the author should have followed up: >taken up 100 billion square meters of floor space that is (with a three-meter ceiling height per floor)

For the punchline, the author should have followed up: >taken up 100 billion square meters of floor space that is (with a three-meter ceiling height per floor): a hundred-story square building 300 meters high, and 3 kilometers long and wide by saying, "Oh and by the way this device has an edge to edge display that is so real you can hold it up seamlessly against a background while it invents a made-up image and draws it on, pretending it's part of reality.[1] It knows its position and can adjust to your movements. It also includes a photography studio that makes billboard-size full-color photos. It fits in your pocket and needs to have its battery recharged once per day. Also it's an entire telephone including video which it has a camera facing the front for. And you can talk to it, it has a built-in assistant. Basically, magic." [1] https://images.adsttc.com/media/images/59b8/247c/b22e/38e2/0300/0549/original/ARKit_gif.gif?1505240185 https://images.adsttc.com/media/images/59b8/247c/b22e/38e2/0...