The book explores the concept of hypocrisy through the lens of evolutionary psychology, arguing that the human mind consists of multiple specialized units which were developed for specific functions. These units sometimes have conflicting goals, leading to seemingly hypocritical behaviors. The author uses this framework to explain why hypocrisy is a common and inevitable feature of human behavior, suggesting that understanding these psychological mechanisms can help us better manage social and personal conflicts. The book combines insights from psychology, biology, and anthropology to illustrate how our minds are designed by evolution to be inconsistent and compartmentalized.