I just finished reading Peter Thiel’s new book, Zero to One: Notes on Startups, or How to Build the Future. For those of you who may not be well-versed in the world of technology geeks, Peter Thiel is an entrepreneur and investor. He was one of the founders of PayPal back in 1998 and was the first outside investor in Facebook in 2004. He invested $500,000 for a 10.2% stake in the company!

While the focus of the book is obviously on technology startups, it’s less about “here’s how you build a startup” (there is no formula) and more about “here’s how to think about the world, humanity, and the future of our civilization.” So even if you’re not a founder, or startup and technology enthusiast, I think you’d still find it really interesting.

As one example, Thiel makes the distinction early on in the book between what he calls “vertical or intensive progress” and “horizontal or extensive progress.” The specific example he gives is of typewriters and word processors. If you take one typewriter and figure out how to make 100 of them, you’ve made horizontal progress. However, if you’ve just replaced typewriters with word processors, you’ve made vertical progress.

In other words, vertical progress is doing new things and horizontal progress is just