Social brains: The ability to read and change minds

Politicians can and should say all kinds of stuff on social network. Because we want and need to know if what's on their mind is also what we're thinking. 

Necomimi is a pair of wearable cat ears with a very special property: By watching how the ears move, people can tell how you're feeling. A headband reads your EEG electrical activity, and the ears droop or perk up depending on whether you're relaxed or tense.