alone with ourselves—is so essential to our creativity, it’s become a much more valuable skill, worth far more than a productivity app, a cleared-out in-box, or a rigidly efficient schedule. As Eric Barker, who studies how human behavior affects creativity, wrote, “Those who can sit in a chair, undistracted for hours, mastering subjects and creating things will rule the world—while the rest of us frantically and futilely try to keep up with texts, tweets, and other incessant interruptions.”