If, however, one factor is too successful, it will continue to be the winning factor regardless of the variation in the other factors over the range of variation in the conditions, and therefore will stifle the development of other advantageous factors until the conditions change sufficiently that it no longer is the winning factor. At this point, the whole population is ill prepared for the change, and may well perish entirely if the winning factor accidentally becomes the matching factor for a disease or a predator.
Erik NaggumRelated topics
change continue development disease factor ill longer point variation well winningRelated quotes
Throughout his last half-dozen books, for example, Arthur Koestler has been conducting a campaign against his own misunderstanding of Darwinism. He hopes to find some ordering force, constraining evolution to certain directions and overriding the influence of natural selection. [...] Darwinism is not the theory of capricious change that Koestler imagines. Random variation may be the raw material of change, but natural selection builds good design by rejecting most variants while accepting and accumulating the few that improve adaptation to local environments.
Stephen Jay Gould
There is a certain indolence in us, a wish not to be disturbed, which tempts us to think that when things are quiet, all is well. Subconsciously, we tend to give the preference to 'social peace,' though it be only apparent, because our lives and possessions seem then secure. Actually, human beings acquiesce too easily in evil conditions; they rebel far too little and too seldom. There is nothing noble about acquiescence in a cramped life or mere submission to superior force.
A. J. Muste
It was measured that the splinters of the Armenian nation that had managed to miraculously escape the Genocide would not be able to recover from the blow, would disappear in the whirlpools on five continents, lose their national identity, and aptitude to be a political factor. But we, as a nation and as a state, were able to reappear at the international arena to affirm that we continue our eternal journey and that we are determined not to allow for such a crime to ever happen again.
Serzh Sargsyan
We were told in one lecture that it was possible to immunize against diphtheria and tetanus by the use of chemically treated toxins, or toxoids. And the following lecture, we were told that for immunization against a virus disease, you have to experience the infection, and that you could not induce immunity with the so-called "killed" or inactivated, chemically treated virus preparation. Well, somehow, that struck me. What struck me was that both statements couldn't be true. And I asked why this was so, and the answer that was given was in a sense, 'Because.'
Jonas Salk
If an organised body is not in the situation and circumstances best adapted to its sustenance and propagation, then, in conceiving an indefinite variety among the individuals of that species, we must be assured, that, on the one hand, those which depart most from the best adapted constitution, will be most liable to perish, while, on the other hand, those organised bodies, which most approach to the best constitution for the present circumstances, will be best adapted to continue, in preserving themselves and multiplying the individuals of their race.
James Hutton