Microsoft HoloLens a sensational vision of PC’s future: In one demo, a “Minecraft” scene was displayed over a real living room. A Microsoft minder asked me to select a virtual hammer (a tool in the game) and start smashing the coffee table in the room. She wanted me, in other words, to use a digital object to interact with a real one. I did so and was stunned by what happened: Before my eyes, the real coffee table splintered into digital debris, and then it was no longer there. HoloLens had perfectly erased the coffee table from the environment.
More important than the device’s performance, though, is its apparent utility.