Aerospace engineers are obsessed with redundancy and backup systems. Russell knows that metals give, that gears slip, and that motors overheat, and he plans for that in his designs. Not everything has to go right in order for it to work. And that way of thinking shows up in every aspect of his life, including how he achieves his ambitions. Which I took as Extractable Lesson number two: His backup plans do not lead to different destinations, such as “If I don’t get into business school, I’ll be a schoolteacher.” His backup plans lead to the same destination, and if he has to arrive late by a back road, that’s fine.” - Po Bronson