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central projection

noun Geometry.

a projection of one plane onto a second plane such that a point on the first plane and its image on the second plane lie on a straight line through a fixed point not on either plane.

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Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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"Nearly a million species of animals are already known. Of these, only a few thousand are endowed with anything which can be called intelligence, only a few tens with high intelligence, and only one with conceptual thought. In the same way, there are hundreds of known religions; it had better be left to more orthodox writers than myself to enumerate those which can be called high religions. Animal evolution witnesses to a central upward trend of biological progress; it also shows us the retention of low types along with high, the throwing out of blind-alley side branches of specialisation at every level, and sometimes even degeneration. Religious evolution also shows a central progress—but equally the production of bizarre side-branches, the permanent confining of the religious spirit in low-level embodiments, its projection into every conceivable cul-de-sac, its too frequent bending over from upward to downward growth."

-Julian Huxley

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