We have summarized the essential of this book by the author.
Functionalism as a method is as old as the first expressions of interest in exotic cultures and, for that very reason, reputed savages and barbarians.
Functionalism in anthropology seeks a clear understanding of the nature of cultural phenomena, before they are subjected to further speculative elaborations.
The evolutionist who develops a theory of the origin of marriage and the family, but who does not distinguish between marriage, sexual conjugation and temporary bond, the selection of the phenomenon such as the classificatory system of kinship terms and its use as survival; shows that by neglecting the functional analysis they lost the anthropological research of generations.