Comment by _Nat_

Got it: ["Superintelligence: Paths, Dangers, Strategies"](https://en.wikipedia.org/wiki/Superintelligence:_Paths,_Dang... ), by Nick Bostrom (2014).

Guess I saw the title, "Superintelligence: An idea that eats smart people", and thought of it as being about that general topic (of superintelligence), rather than being about a specific book.