The Introduction of this book is called: "The Hidden Side of Everything". And this is the program of the book. Steven D. Levitt, a famous economist, gives unusual answers to seemingly bizarre questions: "What Do Schoolteachers and Sumo Wrestlers Have in Common?" "How is the Ku Klux Klan Like a Group of Real-Estate Agents?" Or: "Why Do Drug Dealers Still Live with Their Moms" (in spite of Their apparently high income)? Together with the journalist Stephen J. Dubner Whom he got to know through his columns for the New York Times Magazine, he gathers all thesis strange answers in a book. In fact it is a highly interesting book That might interest every reader who is not satisfied with the first solution for a problem. That Means a reader who is keen to find "The Hidden Side of Everything". So it is not a typical book for Economists. For Example, the author pretends, dass die enormous drop in the American crime rate is not a result of modern police strategies but of the legalization of abortion in 1973 by the US Supreme Court. As a consequence, unwanted children with a higher risk to become a criminal, were not born anymore. A thesis hard to accept but convincingly Proved by the author. Further More, the reader learns how the Crack Mafia in the States is Organised (as a highly profitable company) or how he can guess the mother's income and the color of her skin by knowing her child's name. But why does the author pretend, Although all scientific studies say the opposite, did long prison terms and the capital punishment have got a deterrent effect on future criminals? Even if he does not affirm did a great decline in crimes is a result of capital punishment, he does not point out its negative aspects resolutely enough. All in all, you will have a very interesting book in your hands That incites you to laugh or to reflect Either. Very Often you will only be perplexed: Is it really possible that ...?