Landsburg sets out to challenge reader’s views on many “common senses” through economical cost-benefit analysis. Many of topics touch hot-buttons of social, environment and economic issues, and the solution are often counterintuitive. Some of the ideas seem crazy, but the reader should keep in mind that the purpose of the book is not to offer real-world resolutions. If that’s the case, many ideas are indeed either naïve or absurd. The book should be considered as an exercise of brain or training of logics. Once you accept that, you will find the reasonings are mind-bending and thought-provoking.