The giraffe's neck supposedly supplies a crucial example for preferring natural selection over Lamarckism as a cause of evolution. But Darwin himself (however wrongly by later judgement) did not deny the Lamarckian principle of inheritance for characters acquired by use or lost by disuse. He regarded the Lamarckian mechanism as weak, infrequent, and entirely subsidiary to natural selection, but he accepted the validity of evolution by use and disuse. Darwin does speculate about the adaptive advantage of giraffe's necks, but he cites both natural selection and Lamarckism as probable causes of elongation.
Stephen Jay GouldRelated topics
advantage cause disuse evolution example inheritance later lost mechanism natural neck preferring selection subsidiary use validity judgement darwinRelated quotes
Futurism and Cubism are comparable in importance to the invention of perspective, for which they substituted a new concept of space. All subsequent movements were latent in them or brought about by them.. ..the two movements cannot be regarded as in opposition to each other, even though they started from opposite points; I maintain [an idea approved by Appolinaire and later by Matisse that they are two extremes of the same sign, tending to coincide at certain points which only the poetic instinct of the painter can discover: 'poetry' being the content and 'raison d'tre' of art.
Gino Severini
[S]cientists are not robotic inducing machines that infer structures of explanation only from regularities observed in natural phenomena (assuming, as I doubt, that such a style of reasoning could ever achieve success in principle). Scientists are human beings, immersed in culture, and struggling with all the curious tools of inference that mind permits [...]. Culture can potentiate as well as constrain-as Darwin's translation of Adam Smith's laissez-faire economic models into biology as the theory of natural selection. In any case, objective minds do not exist outside culture, so we must make the best of our ineluctable embedding.
Stephen Jay Gould
If we ask how creatures [bees] that act so elaborately against their private advantage can have evolved, the answer lies in their mode of reproduction. Most workers are sterile. The unit of selection is normally the whole community. Its prosperity depends on the efficiency of the workers. An uncooperative strain would simply revert toward the solitary life these insects started from and in which many would still remain.. So it is natural to understand their evolution, as we would that of a plant, without reference to the plans or wishes of the individual bees.
Mary Midgley
These things, which we state lightly enough here, are yet of deep import, and indicate a mighty change in our whole manner of existence. For the same habit regulates not our modes of action alone, but our modes of thought and feeling. Men are grown mechanical in head and in heart, as well as in hand. They have lost faith in individual endeavour, and in natural force, of any kind. Not for internal perfection, but for external combinations and arrangements, for institutions, constitutions, for Mechanism of one sort or other, do they hope and struggle. Their whole efforts, attachments, opinions, turn on mechanism, and are of a mechanical character.
Thomas Carlyle
Ten percent of all the boys in schools are now threatened or injured with a weapon at school. One out of ten. The number of students caught with a firearm increased 29 percent in one year. "Natural selection"? If the strongest survive, well then if that guy's bigger than me, I better bring a gun to even the odds. This evolution theory is not just dumb, folks, it's dangerous. It removes all morality. There's no such thing as right and wrong. Might becomes right. Textbooks say you're an animal and share a common heritage with earthworms. Could it possibly be that what we are teaching kids is causing this problem in our schools?
Kent Hovind