Today is launch day for the Audible version of The Great Mental Models: General Thinking Concepts, our first mental model book. In this special edition of The Knowledge Project, I'm reading an excerpt from the book that explains why this book, why mental models, why now. Hopefully, it will be so compelling, you won't be able to wait another second to buy your own copy. --- Is your brain hungry for more? Don't miss out! Sign up for our weekly "Brain Food" at https://fs.blog/newsletter/ Follow @farnamstreet on Twitter for mind-expanding content.