The people who are rating this book 1-star are missing the point. If you don't understand human psychology, you don't understand the world. This book isn't teaching you haw to become a monster... Its informing you on human psychology. Knowledge is power, whether you use it or not is a choice. How you use it determines if that power is rooted in good or evil. But hey, they say ignorance is bliss. So I guess I can't blame them for not wanting to know more.