The 38 short essays collected in this book will allow the interested reader to take a fresh look at the stock market. The author, Michael Mauboussin, chief investment officer at Credit Suisse and adjunct professor at Columbia Business School and a recognized authority on behavioral finance, approaches the stock market as a complex adaptive system. To illustrate his ideas, he draws unexpected but justifiable parallels with ant colonies, gambling, sports competitions or mathematical rules. Considering the philosophy and psychology of investing, innovative and competitive strategies, the author suggests using an interdisciplinary approach when considering these problems. On the one hand, he gives practical advice on how to invest for the long term, assess the potential of companies, maintain investor discipline, manage stress and avoid herd behavior. On the other hand, it offers a fun game with unconventional ideas. In this sense, the book will bring intellectual benefit to the reader - it will give a cool idea or show the path to self-improvement.