In an im portant sense the culture is the entity at the peak of the hierarchical model of archaeological entities (fig. 49). T h e archaeo logical culture when properly defined represents the material culture subsystem of a specific sociocultural system . T h e culture system and the com m unities which generate it em body the largest unit with internally the most richly cross-connected and m utually reinforcing system of inform ation variety, uniting and stabilizing every channel of human intercom m unication and behaviour. Social organizations of greater size than the society and its culture are less richly networked and consequently have less rich system ‘behaviour’. T h e increasing power and diversity of m ethods of com m unication have nevertheless allowed a steady increase in the sustainable size of such sociocultural systems.