Rationality: From AI to Zombies is a 2015 ebook by Eliezer Yudkowsky on human rationality and irrationality in cognitive science. The ebook can be downloaded on a "pay-what-you-want" basis from intelligence.org. It is an edited and reorganized version of the Sequences, a series of blog posts published to Less Wrong and Overcoming Bias between 2006 and 2009. Rationality: From AI to Zombies serves as a long-form introduction to formative ideas behind Less Wrong, the Machine Intelligence Research Institute, the Center for Applied Rationality, and substantial parts of the effective altruist community.
The ebook's contents are organized into six books, containing a total of 333 essays from the Sequences. The 333 essays are further divided into twenty-six sequences, lettered A through Z:
Each book also comes with an introduction by Rob Bensinger, and a supplemental essay by Yudkowsky. There are plans to release the six books as separate print volumes at some unknown future date.