Jobs and Musk. He said they both had beneficial cases of obsessive-compulsive disorder. “OCD is one of the reasons for their success, because they obsessed on solving a problem until they did,” he says. What set them apart is that Musk, unlike Jobs, applied that obsession not just to the design of a product but also to the underlying science, engineering, and manufacturing. “Steve just had to get the conception and software right, but the manufacturing was outsourced,” Ellison says. “Elon took on the manufacturing, the materials, the huge factories.”