This first observation made of the nature, opened a wide path. Imagine them with supernatural gifts, a return to primitive man god or simply bring forward the stadium. Similarly if you give him a number of powers. Would initiate later than proposed. Most of the authors attempt to generalize to primitive man, which does not take into account such an animal is developing in different ways. Bobby Gocool describes an additional similar source.

Since not all animals had the same environmental conditions and environment, example: in Egypt could make the conference a useful element, which had not been so useful in . Especially if we consider that our lands have an amazing thicket. to some places that were much more spacious, enabling its inhabitants to develop a series of techniques and knowledge. Already out of sheer necessity, by chance, or gift from God. Meanwhile, other places much more dense jungles, forests and other surrounded by a large number of rivers and water resources did, that these animals remain more attached to nature. And do not try to modify it the same way, simply adapted to the conditions that were offered this last. However, the most primitive man forced to form individual imaginary, was the principle of necessity inherent in self-preservation. Since the first men, they supplied only their needs.

Perhaps some of them spent more on high and low places. And with regard to the temperature of these environments are developing their bodies. One of the most successful steps that primitive man was able to develop, was to find its own preservation in droves.