This is the second - significantly expanded - edition of the book by the famous economist Konstantin Sonin, professor at the University of Chicago and the Higher School of Economics. This is a lively, engaging and accessible account of the complex economic problems of the modern world and what economists are doing to solve them. The chapters can be read in any order, because each “lesson” is a discussion of a question taken from life or home conversations, from the pages of newspapers and magazines, the TV screen, etc. From this book you will learn why the personal lives of top managers - a subject of concern for investors is how to properly sell and buy radio spectrum frequencies, in what situations freedom of speech contributes to economic growth and the dangers of protectionism.