An acclaimed journalist examines how games can help us learn, create, and innovate in any kind of business. If you've ever found yourself engrossed in Angry Birds, Call of Duty, or a plain old crossword puzzle when you should have been doing something more productive, you know how easily games hold our attention. Hardcore gamers have spent the equivalent of 5.93 million years playing World of Warcraft while the world collectively devotes about 5 million...