Rationality: from AI to Zombies really changed my way of thinking in many ways. It's very hard to describe it or sell it in a few sentences. Partly because it covers so many different things. And partly because I read it so long ago and have already absorbed many of the good ideas in it. They no longer seem exciting and new, and just feel obvious. But they certainly weren't when I first read it.

I constantly see places where an idea from the book is relevant and I want to make people read a chapter of it. Examples include insights into evolution, artificial intelligence, morality, and philosophy. There's a short section on how people tend to argue about the definitions of words and how unproductive this is, that I always find relevant. There's a lot of discussion on various human biases and how they affect our thinking. My favorite is hindsight bias, where people overestimate how obvious events were after they know the outcome. Or the planning fallacy, which explains why so many big projects fail or go over budget.

The author's writing style is somewhat polarizing. Some people love it and some people hate it, with fewer in between. He definitely has a lot of controversial ideas. Although in the 10 years since he started writing, a lot of his controversial opinions on AI have gone mainstream and become a lot more accepted than they were back then.