Are innovators always difficult to work with? What kind of person can create disruptive change? Walter Isaacson is a student of history with a focus on geniuses, from Albert Einstein to Leonardo da Vinci. The former Time magazine editor followed Elon Musk for three years to report that best-selling biography, as he did with Steve Jobs before him. Martha talks to Isaacson about watching genius up close, and the common threads among the people who are drawn to change the world.

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