The title of this book, A World Without Email, turns out to be just an approachable shorthand for the more accurate portrayal of my vision: A World W… - Cal Newport

We have now seen two strands of thought — one about the increasing scarcity of deep work and the other about its increasing value — which we can combine into the idea that provides the foundation for everything that follows in this book: The Deep Work Hypothesis: The ability to perform deep work is becoming increasingly rare at exactly the same time it is becoming increasingly valuable in our economy. As a consequence, the few who cultivate this skill, and then make it the core of their working life, will thrive.

Decades of work from multiple different subfields within psychology all point toward the conclusion that regularly resting your brain improves the quality of your deep work. When you work, work hard. When you’re done, be done. Your average e-mail response time might suffer some, but you’ll more than make up for this with the sheer volume of truly important work produced during the day by your refreshed ability to dive deeper than your exhausted peers.

You’re either remarkable or invisible,” says Seth Godin in his 2002 bestseller, Purple Cow.1 As he elaborated in a Fast Company manifesto he published on the subject: “The world is full of boring stuff — brown cows — which is why so few people pay attention…. A purple cow… now that would stand out. Remarkable marketing is the art of building things worth noticing.”2 When Giles read Godin’s book, he had an epiphany: For his mission to build a sustainable career, it had to produce purple cows, the type of remarkable projects that compel people to spread the word. But this left him with a second question: In the world of computer programming, where does one launch remarkable projects? He found his second answer in a 2005 career guide with a quirky title: My Job Went to India: 52 Ways to Save Your Job.3 The book was written by Chad Fowler, a well-known Ruby programmer who also dabbles in career advice for software developers.