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There is another aspect to this selective process, noted before in another context- the struggle for existence between groups. So intense are these tribal struggles in early society that harmony within a group is absolutely necessary. Individualization means disorganization; and whatever communities developed free thought and divergent ideas were at a disadvantage when it came to action.

This process of selective admission has, of course, always been going on; ever since the fashion of pecuniary emulation set in which is much the same as saying, ever since the institution of a leisure class was first installed. But the precise ground of selection has not always been the same, and the selective process has therefore not always given the same results.

Social evolution is a process of selective adaptation of temperament and habits of thought under the stress of the circumstances of associated life. The adaptation of habits of thought is the growth of institutions. But along with the growth of institutions has gone a change of a more substantial character.

It rests with him to determine, to a great degree, what plants and animals shall remain upon the earth and what shall be swept from its surface. By unconsciously imitating the selective processes of Nature, he long ago wrought many wild species into forms subservient to his needs.

Like selective service for the armed forces, it rests on the obligation of each citizen to serve his Nation to his utmost where he is best qualified. It does not mean reduction in wages. It does not mean loss of retirement and seniority rights and benefits. It does not mean that any substantial numbers of war workers will be disturbed in their present jobs. Let these facts be wholly clear.

There is nothing in the world so bewildering as the selective instinct of humanity, the reasons which draw people to each other, the attractive power of similarity and dissimilarity, the effects of class and caste, the abrupt approaches of passion, the influence of the body on the soul and of the soul on the body.

If you carry in your mind's eye these four varieties of pigeons, you will bear with you as good a notion as you can have, perhaps, of the enormous extent to which a deviation from a primitive type may be carried by means of this process of selective breeding. End of The Perpetuation of Living Beings.

Commanders employing Rapid Dominance will need to orchestrate it using similar principles, while applying greater selective ability to turn on and off a variety of systems, sensors, and devices influencing the whole operational picture. Technology should also give commanders a much better grasp of what is evolving during a battle.

They and their preemptive strikes, they and their selective targeting with improved smart bombs, were killing and harming thousands of civilians after evoking psychological trauma in this failed shock and awe campaign.

Can we find any approximation to this in the different races known to be produced by selective breeding from a common stock? Up to the present time the answer to that question is absolutely a negative one. As far as we know at present, there is nothing approximating to this check.