“For instance, in the design stages for a new mouse for an early Apple product, Jobs had high expectations. He wanted it to move fluidly in any direction—a new development for any mouse at that time—but a lead engineer was told by one of his designers that this would be commercially impossible. What Jobs wanted wasn’t realistic and wouldn’t work. The next day, the lead engineer arrived at work to find that Steve Jobs had fired the employee who’d said that. When the replacement came in, his first words were: “I can build the mouse.”