Google wants its AI to know you better than you know yourself

It's a sunny afternoon in early January and, at the moment, Google owns this town. The search giant has come here for a marketing blitz at CES, the biggest tech showcase in the world. Its sole mission is trumpeting the Google Assistant, its digital concierge software for controlling your smart thermostat, getting your flight information and reading you headlines. Huffman, vice president of engineering for the Assistant, is standing with me in a big glass orb on the High Roller, Sin City's version of the London Eye observation wheel. We've just about reached the apex of the ride.