Writer Walter Isaacson grew up in a family full of engineers and spent his spare time making radios and televisions sets. While he became a journalist and author instead, his interest in technology and science remained and has informed his selection of biography subjects, from Albert Einstein to Steve Jobs. Walter joined David to talk about his latest biography on Elon Musk and Musk's “epic hero visions of himself,” his technological genius, how Musk’s father’s treatment of him affected his personality, the openness and transparency Musk allowed Isaacson, and criticism Isaacson received for getting too close to Musk during the writing of his book, "Elon Musk."To learn more about how CNN protects listener privacy, visit cnn.com/privacy