ABSTRACT
L. R. Hiatt has suggested two possible explanations for the discrepancy between model and reality in Australian society; however, there is also a third worth considering—that at one time, all this completed theory was clearly conceived and invented by native sociologists or philosophers. The South American myths dealing with the origin of cultivation, however, bring affines of a different type on the scene—that is, the wife's sister and the husband's brother—these being types of people we disregard by virtue of the principle of the equivalence of siblings, well known in the theory of kinship since Radcliffe-Brown. In anthropology progress will never result from destroying what has been previously achieved but rather from incorporating the past of our science into its present and future, enriching the one with the other and turning the whole process into a lasting reality.
