Waorani

There are many different reason why a person may act aggressively towards other human being. The person may act this way because of his background or the way he/she was brought up in life. A person does not; act this way based on natural feeling alone. Is more like a melded, learned behavior. A human being must have both environmental and instinctual factors in order to show aggression. Some of a person's natural instincts …

…deal with danger by flight rather than by fight. The two cultures developed many social and psychological mechanisms for reinforcing these differences. The Robarcheks use these examples to reject naive theories that claim humans are violent or aggressive by nature. In fact, human cultures vary enormously in their approaches toward violence, and humans vary their behavior accordingly. Implications for dealing with violence are discussed in the book, and are of obvious importance for the world.