Gwynne Shotwell has a difficult job. Her boss, Elon Musk, is known for wild, impossible ambitions on wild, impossible timelines. There’s even a term for his rosy view of what’s achievable and when: “Elon time.” As president and COO of Musk’s space exploration company, SpaceX, Shotwell must convey Musk’s crazy expectations to a workforce of thousands, without discouraging them with impossible-to-achieve goals.