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We have devolved in many ways, and technology has helped that along. Perhaps technology is not so much a continuous extension of ourselves, but rather like the skin that is continually being replaced. It's not that our Umvelt is limited, it is rather being sloughed-off and replaced by new 'extensions'. Once the old skin cells are replaced, there is no way of getting the old ones (the old ways of seeing) back. (Tuan, Yi-fu. “Passing Strange and Wonderful: Aesthetics, Nature, and Culture.” Passing Strange and Wonderful: Aesthetics, Nature, and Culture, Kodansha International, 1995, pp. 99–101.)

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The red and green specialists: why human colour vision is so odd - James P Higham | Aeon Ideas