The new book by Igor Kalinauskas examines the psychological foundations of human behavior, its “mechanical” part, which depends on how a person perceives and processes information and what behavioral attitudes are formed in it. This is a scientific and at the same time half-joking cartography of types of human behavior. The book is intended for everyone who, having often and often communicated with people, would like to learn more about their interlocutors, about what motivates them. These are practical recommendations useful for parents, psychologists, teachers, officials, businessmen and simply sociable people.