Economic crisis: who is to blame and what to do - стр. 5
In its sense these ideas are about the fact that persons with domain intelligence were struck by persons with more developed social intelligence. Let us provide the data from S. Saveliev about the change of the volume of the skull of our ancestors (11, page 209).
As we can see about 70 thousand years ago the skull volume of our ancestors started decreasing. Let us provide the statements of the author on this matter.
“In sufficiently large groups of sapiens constant hard artificial selection for the "sociality" was taking place: reproductive benefits were received by the best adapted individuals to the existence of a group of individuals. The most socialized individuals had the reduced aggressiveness, the developed communicative and food tolerance to neighbors”.
In such conditions the primary surplus arising in brain volume was not popular, and the optimal combination of qualities was achieved in much smaller amounts. Probably a regular solution of super tasks necessary for basic survive has been replaced by the group training. In fact, there was an external method of storage and transmission of biologically important information, which has reduced the role of the individual abilities. This gradually reduced the average volume of the brain to 1330 cubic cm. Socialization and development of primary cultural traditions was not the stimulus, but the reason for the prosperity of individuals with a minimum of individual differences. The support of the existing forms of relationship and behavioral skills in a group provides benefits for individuals with mediocre abilities. Extreme individualization of behavior in the family, or the mixed flock group reduces the likelihood of reproductive success at a low dominance. In connection with this the level of socialization of group is inversely proportional to the realization of the abilities of the individuals. These phenomena are observed in modern societies. Individualized forms of behavior are not usually accepted by members of the society… These observations suggest that 50 thousand years ago socialization, development of cultural and hunting traditions contributed into the artificial selection of the less capable but more socialized individuals "[11, page 290-291].
If you take the labour tools of that period, arrange them in time, it can be clearly seen that a decrease in brain size and their improvement seems to be frozen. But what had been achieved was handed down from generation to generation for thousands of years. Public consciousness through the socialization remembered what ancestors made. The social motivators are able to maintain and transfer knowledge and experience from generation to generation. And we must agree with S. Saveliev: “The situation looks quite anecdotal. Very capable people with big brains create a complex and effective system of training and retention of knowledge for the entire population. Having taught the less capable relatives the lessons of survivals, they doom themselves to destruction. Humanity faces such situation now.” [11, page 292].