You probably wouldn’t be reading this book if you hadn’t had at least a few times in your life when you were thoroughly unbored—by a good story, a long walk, or an absorbing piece of music. At the end you felt alive, refreshed, and alert. But you probably wouldn’t be reading this book if you hadn’t also spent an hour being distracted from boredom by the “junk feeds” on your phone—and at the end just felt disoriented and spent.