Anathem

How can this guy write four 800 page books in five years while he is working all day long for Jeff Bezos on the X-Prize?

I haven't written 800 pages in my entire life, and most of what I have written is a list of what I had for lunch on specific days during this 56.8 year journey (if you want to call it that).  I call it a headlong fall down the staircase of the cosmos.