ABSTRACT
A group way of life is not only a necessity for humans but also an advantage in the difficult task of survival. It is much easier to exist in a family group than alone: The newest born is fed and protected, and all eat better when two or three adults work to provide for the group instead of each individual working alone. It is also easier to defend one’s home or belongings (or territory from predators) in a group setting; thus, there is much truth in the sayings about the importance of the group.
