N ENDURING and usually unquestioned assumption underlying gen-A eral anthropological theory is that which suggests the "homogeneity" of very simple societies. For the purposes of the development of evolutionary theory, or for the generation of a descriptive ethnography, or for the discussion . of the validity of the "genetic" approach in historical linguistics, it is customarily assumed that "primitive,)' or "simple" or "folk" societies contain individuals who think, and act, and speak more or less alike.* Such a society is small, isolated, nonliterate, and homogeneous, with a strong sense of group solidarity. The ways of living are conventionalized into the coherent system which we call "a culture" (Redfield 1947:294). The concept of primitive or "tribal" culture is based on three fundamental aspects of the behavior of members of tribal societies. First, it is a construct that represents the ideal, norm, average, or expectable behavior of all members of a fairly small, simple, independent, self-contained, and homogeneous society (Steward 1955 :44).