The book "Economic Weiss Functions" by the famous economist John McElroy is a study on the impact of "immoral" activities on the economy. The author examines vice in a broad context, from alcohol and drugs to gambling and sexual services. The book examines both the vice industries themselves and the hidden use of vice to solve various economic problems. The book reveals the non-obvious influence of these phenomena on economic processes, offering a new perspective on how the economy interacts with the "dark" side of society. "The Economic Functions of Vice" is a fascinating blend of analysis, economic theory, and social science that forces the reader to rethink their perceptions of vice and its place in the economy.