We simply can't accept the finite nature of our lives. And that's why he really uses this 4,000 weeks thing. It's a very jarring thing. I keep a calendar in my office on the wall with one block for each week. So, it's got 52 blocks per row and it's got 88 rows—assuming I'm going to live to 88, which of course there's zero guarantee I will—and every Sunday, I color in a block.