Abstract Ethological behavior‐traits of Humans secure strong group bonding in precultural groups and primitive group societies. These small groups are characterized by size of 20 to 60 people, mild hierarchy, highly developed cooperation, strong bonding among members, and xenophobia toward nonmember humans. During human evolution these groups developed distinct cultural structures and represented small autogenetic systems, which were able to replicate their various components, that is, humans, artifacts and ideas. The ideas of the group were shared by its all members. The most characteristic group organization is now idea‐sharing, which is the largest source of present day human cohesion. A set of related idea entities are shared by a set of people. The members of both sets are continuously changing. One given member of any set can also be the member of other sets. Shared ideas represent strong cohesive bonds among people. This peculiar relation between people and ideas has led to the emergence of very sp...