Link: https://slatestarcodex.com/2020/01/08/what-intellectual-progress-did-i-make-in-the-2010s/

One of the best parts of writing a blog is being able to answer questions like this. Whenever I felt like I understood new and important, I wrote a post about it. This makes it easy to track what I learned.

I think the single most important thing I discovered this decade (due to a random comment in the SSC subreddit!) was the predictive coding theory of the brain.