‘With unsupervised learning, only in the latter stages would the system’s human masters intervene, by labeling the more desirable outputs and rewarding successful outcomes. “Think about little kids, when they learn to recognize cows,” says Hinton. “It’s not like they had a million different images and their mothers are labeling the cows. They just learn what cows are by looking around, and eventually they say, ‘What’s that?’ and their mother says, ‘That’s a cow’ and then they’ve got it. This works much more like that that.”’