What if your computer could understand how you felt? We spend so much time with technology, so should our smart homes, phones and computers be in tune with our feelings? Or if smart fridges could assess our stress level to perhaps prevent binge eating by auto-locking the fridge. This is what Rana El Kaliouby has made her mission to find out. She has led the world’s largest emotion data database to find out how to analyze complex emotions and cognitive states from face and voice.