Understanding evolution aids us in solving biological problems that affect our daily lives. In the field of medicine, there are numerous examples of this. Researchers must understand the evolutionary patterns of disease-causing organisms in order to stay one step ahead of pathogenic diseases. The study of human evolution can help us understand the violence, aggression, and fear that surrounds us today. Humans evolved as social, empathetic, collaborative, and altruistic beings in small groups with shared identities.