When Yoky Matsuoka was a small child in Tokyo, she dreamed that one day she would be the next Serena Williams. But while she never made it to Wimbledon, Matsuoka's pioneering work studying robotics and the human brain earned her the prestigious MacArthur "genius" fellowship. Speaking at Fortune's Brainstorm Tech dinner in San Francisco on Wednesday, Matsuoka discussed her work in the red-hot field of artificial intelligence and her career at Apple aapl, Google's googl experimental research group, and Nest, the home technology arm of Google's parent company. Matsuoka first became enamored with robotics when she attended the University of California at Berkeley. At the time she wanted to merge her love of tennis with robotics, and thought it would be cool to potentially build a tennis buddy "with legs and arms and eyes with computer vision" that could track a tennis ball and hit with her like a human. But building such a robot is very complex.