The Control Key

Inside Elon Musk's fight-and-fears for the future of Artificial Intelligence

- By Walter Isaacson

At a conference in 2012, Elon Musk met Demis Hassabis, the videogame designer and artificial-intelligence researcher who had co-founded a company named DeepMind that sought to design computers that could learn how to think like humans.

"Elon and I hit it off right away, and I went to visit him at his rocket factory," Hassabis says. While sitting in the canteen overlooking the assembly lines, Musk explained that his reason for building rockets that could go to Mars was that it might be a way to preserve human consciousness in the event of a world war, asteroid strike, or civilization collapse. Hassabis told him to add another potential threat to the list: artificial intelligence. Machines could become superintelligent and surpass surpass us mere mortals, perhaps even decide to dispose of us.

Musk paused silently for almost a minute as he processed this possibility. He decided that Hassabis might be right about the danger of AI, and promptly invested $5 million in DeepMind as a way to monitor what it was doing.

A few weeks after this conversation with Hassabis, Musk described DeepMind to Google's Larry Page. They had known each other for more than a decade, and Musk often stayed at Page's Palo Alto, Calif., house. The potential dangers of artificial intelligence became a topic that Musk would raise, almost obsessively, during their late-night conversations. Page was dismissive.

Musk mulls AI with Shivon Zilis and their twins in this photo taken by Isaacson.