Tim Cook just handed Apple—now worth four trillion dollars—to a guy most people have never heard of, and the timing screams panic about AI. John Ternus has been building iPhones and Macs for 25 years inside Apple, but he's inheriting a company that got so far behind on artificial intelligence it had to beg Google for help with Siri. Cook turned Apple into a money-printing machine that defies physics, but he's stepping down September first because someone finally admitted the hardware genius playbook doesn't work when Microsoft and Google are already ten moves ahead in the AI race.