I admit I don't remember exactly what Eliezer's intentions for his book are, so I just outlined what I would write. If only I had time right now (although that's not saying much, considering how much time I spent sites like this). Any thoughts on possible issues that are controversial enough to be interesting, but not enough to bring out biases and cached thoughts?
Followup to: The Most Frequently Useful Thing
What's the number one thing that goes into a book on rationality, which would make you buy a copy of that book for a friend? We can, of course, talk about all the ways that the rationality of the Distant World At Large needs to be improved. But in this case - I think the more useful data might be the Near question, "With respect to the people I actually know, what do I want to see in that book, so that I can give the book to them to explain it?"
(And again, please think of your own answer-component before reading others' comments.)