# New edition of "Rationality: From AI to Zombies"

MIRI is releasing a new edition of _**Rationality: From AI to Zombies**,_ including the first set of _R:AZ_ print books. As of this morning, print versions of _Map and Territory_ (volume 1) and _How to Actually Change Your Mind_ (volume 2) are now available **on Amazon** ([1](https://smile.amazon.com/dp/1939311233), [2](https://smile.amazon.com/dp/1939311276/)), and we'll be rolling out the other four volumes of _R:AZ_ over the coming months.

_R:AZ_ is a book version of Eliezer Yudkowsky's [original sequences](https://wiki.lesswrong.com/wiki/Original_sequences), collecting a bit under half of his _Overcoming Bias_ and _LessWrong_ writing [from November 2006 to September 2009](https://wiki.lesswrong.com/wiki/Less_Wrong/All_articles). _Map and Territory_ is the canonical place to start, but we've tried to make _How to Actually Change Your Mind_ a good jumping-on point too, since some people might prefer to dive right into _HACYM_.

The price for the print books is $6.50 for _[Map and Territory](https://smile.amazon.com/dp/1939311233)_, and $8 for _[How to Actually Change Your Mind](https://smile.amazon.com/dp/1939311276/)_. The new edition is also available electronically (in EPUB, MOBI, and PDF versions) on a pay-what-you-want basis: [1](http://gumroad.com/l/mapterritory), [2](http://gumroad.com/l/howtoactuallychangeyourmind). The _HACYM_ ebook is currently available for preorders, and should be delivered in the next day.

The previous edition of _R:AZ_ was a single sprawling 1800-page ebook. I announced at the time that we were also going to release a paper version divided into six more manageable chunks; but this ended up taking a lot longer than I expected, and involved more substantive revisions to the text.

Changes going into the new edition include:

*   The first sequence in _Map and Territory_, "Predictably Wrong," has been heavily revised, with a goal of making it a much better experience for new readers.
*   More generally, _R:AZ_ is now more optimized for new readers, and less focused on extreme fidelity to the original blog posts, since this was one of the biggest requests from LessWrongers in response to the previous edition of _R:AZ_. This isn't a _huge_ change, but it was an update about which option to pick in quite a few textual tradeoffs.
*   A bunch of posts have been added or removed. E.g., [The Robbers Cave Experiment](http://lesswrong.com/rationality/the-robbers-cave-experiment) was removed because while it's still a cool and interesting study, the researchers' methods and motives have turned out to be [pretty bad](https://www.theguardian.com/science/2018/apr/16/a-real-life-lord-of-the-flies-the-troubling-legacy-of-the-robbers-cave-experiment), and it isn't particularly essential to _HACYM_.
*   The "Against Doublethink" sequence in _How to Actually Change Your Mind_ has been removed, to reduce _HACYM_'s page count (and therefore its price and its potential to intimidate readers) and improve the book's focus. The first post in "Against Doublethink" ([Singlethink](https://lesswrong.com/rationality/singlethink)) has been kept, and moved to a different sequence ("Letting Go").
*   Important links and references are now written out rather than hidden behind Easter egg hyperlinks, so they'll show up in print editions too. Easter egg links are kept around if they're interesting enough to be worth retaining, but not important enough to deserve a footnote; so there will still be some digital-only content, but the goal is for this to be pretty minor.
*   A glossary has been added to the back of each book.

Oliver and Ben also plan to post the digital versions of _M&T_ and _HACYM_ to [_R:AZ_ on LessWrong](https://lesswrong.com/rationality) — initially as new posts, though the URLs and comment sections of new and old versions may be merged in the future if LW adds a feature for toggling between post revisions.