+12. Tradition and its restraints.+ It is evident that the "ways" of the older and more experienced members of a society deserve great authority in any primitive group. We find that this rational authority leads to customs of deference and to etiquette in favor of the old. The old in turn cling stubbornly to tradition and to the example of their own predecessors. Thus tradition and custom become intertwined and are a strong coercion which directs the society upon fixed lines, and strangles liberty. Children see their parents always yield to the same custom and obey the same persons. They see that the elders are allowed to do all the talking, and that if an outsider enters, he is saluted by those who are at home according to rank and in fixed order. All this becomes rule for children, and helps to give to all primitive customs their stereotyped formality. "The fixed ways of looking at things which are inculcated by education and tribal discipline, are the precipitate of an old cultural development, and in their continued operation they are the moral anchor of the Indian, although they are also the fetters which restrain his individual will."[16] +13. The concept of "primitive society"; we-group and others-group.+ The conception of "primitive society" which we ought to form is that of small groups scattered over a territory. The size of the groups is determined by the conditions of the struggle for existence. The internal organization of each group corresponds to its size. A group of groups may have some relation to each other (kin, neighborhood, alliance, connubium and commercium) which draws them together and differentiates them from others. Thus a differentiation arises between ourselves, the we-group, or in-group, and everybody else, or the others-groups, out-groups. The insiders in a we-group are in a relation of peace, order, law, government, and industry, to each other. Their relation to all outsiders, or others-groups, is one of war and plunder, except so far as agreements have modified it. If a group is exogamic, the women in it were born abroad somewhere. Other foreigners who might be found in it are adopted persons, guest friends, and slaves.