An essential reading for decision analysts, but probably overkill for everyone else (Smart Choices is a better primer). Dense with information and advice, most of which I found incredibly useful. The only irksome quality I found was the repeated and popular assertion that “ought”s can’t come from is, that science alone can’t guide our decision making. I agree only so far as to say that most people’s values are based on unscientific foundations, but that doesn’t preclude the possibility that a value system couldn’t or shouldn’t be empirical to some degree. As an analyst, I’m willing to play along with any absurd combinations of objectives in order to resolve a problem, but I think we should be able to put ourselves in a position to separate good decisions from bad ones based on the type of value system used to make it. Anyway, it’s still a great book.