Elon Musk : How to Build the FutureElon Musk has been known to keep only few books on the shelf behind his desk at the SpaceX factory floor in Hawthorne, Calif. Most of them are basic books on rocket design. The remaining one is Einstein, the biography of the great physicist, by former TIME editor Walter Isaacson. There"s an odd push-pull in a man like Musk, who is humble enough to own a space launch company and yet still...