“Deep learning should not be called AI,” Krizhevsky says. “I went to grad school for curve setting, not AI.” What he did, first at Google Brain and then inside the self-driving car project, was apply the math to new situations. This was very different from any effort to re-create the brain—and far from vague fears that machines would someday spin outside our control. It was computer science. Others agreed, but this was not a view that made headlines.

