I think a really cool invention would be something called an ICUC. It would be a small disk about one and a quarter inches in diameter. It would have a camera on the side, an activation button in the middle, and microphones and speakers covering the rest of it. It would fit just above your ear with the help of a frame, and would work sort of like Siri: you hold down the activation button and talk. The camera would analyze everything you can see – hence its name – so you could hold up an object and ask, “What’s this?” The ICUC would give you an answer.