Sunstein, the co-author of Nudge and former head of the Office of Information and Regulatory Affairs under Obama, has written a pretty nice little primer/ manifesto for evidence-based policy, with cost-benefit analysis as the means to that end. Sunstein himself is not an economist (rather, a former lawyer), so this is not a theory heavy econ-text (not a single graph or chart, in fact!), but instead comes from the public policy perspective. (The cover blurb, from Larry Summers, fittingly recommends this book to any future president). As such the book looks into cases and circumstances that make policy decisions difficult, where CBA can add clarity, and where CBA itself may be confounded. Examples include GMO regulation, national security vs privacy concerns, and climate change, among a host of other, more minor environmental and transportation examples.
Despite being quite short and non-academic, it's also not a super fun entertaining read, in the vein of some other pop-sci books. It does, however, raise interesting questions, provide interesting avenues of addressing those questions, and show an interesting insider-perspective of the policy process. An interesting book, I suppose, and one I'd recommend to those with an interest in how governments make, or should make, decisions.
The one thing I would have liked to see more of was this latter insider-perspective: Sunstein was afforded a rare role and view inside this great sausage-making policy process, and it would have been insightful to get a better view of how this does end up actually playing out, rather than just how it should work. Anyway, a solid little book in defense of a process, CBA, that seeks a more impartial, technocratic approach to government and society - certainly a goal worthy of due attention.