Of mankind in this extremely primitive condition we have no traces. There could indeed be no traces. All savages of the present day or of whom we have any record represent a relatively highly developed traditional culture, with elaborate languages, myths, and well-established artificial customs, which it probably took hundreds of thousands of years to accumulate. Man in "a state of nature" is only a presupposition, but a presupposition which is forced upon us by compelling evidence, conjectural and inferential though it is. On a geological time scale we are still close to savagery, and it is inevitable that the ideas and customs and sentiments of savagery should have become so ingrained that they may have actually affected man's nature by natural selection through the survival of those who most completely adjusted themselves to the uncritical culture which prevailed. But in any case it is certain, as many anthropologists have pointed out, that customs, savage ideas, and primitive sentiments have continued to form an important part of our own culture down even to the present day. We are met thus with the necessity of reckoning with this inveterate element in our present thought and customs. Much of the data that we have regarding primitive man has been accumulated in recent times, for the most part as a result of the study of simple peoples. These differ greatly in their habits and myths, but some salient common traits emerge which cast light on the spontaneous workings of the human mind when unaffected by the sophistications of a highly elaborate civilization. At the start man had to distinguish himself from the group to which he belonged and say, "I am I." This is not an idea given by nature.[16] There are evidences that the earlier religious notions were not based on individuality, but rather on the "virtue" which objects had--that is, their potency to do things. Only later did the animistic belief in the personalities of men, animals, and the forces of nature appear. When man discovered his own individuality he spontaneously ascribed the same type of individuality and purpose to animals and plants, to the wind and the thunder.