This is a new book by the famous American psychologist Douglas Kenrick. Considering human nature from the perspective of evolutionary psychology, the author comes to the conclusion that behind the civilized façade hides a rather wild inside and that people are much more like howling hyenas and screaming baboons than we are used to think, with all your homicidal tendencies and sexual fantasies. And people's irrational behavior is actually deeply rational, including racial prejudice, day-long camping and excessive consumption. The author reveals the true nature of social problems, international conflicts and global markets, striking the reader with vivid metaphors and non-standard life examples and giving new answers to the most important questions of modern reality.