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8

Humans (and many mammals, for that matter) are not born knowing how to use our eyes. During the first month we can only discern vague shapes and shadows beyond much more than a foot or so, though some color development takes place during that time. (References here and here.)I won't go into anymore detail; the point being that the brain of a person who is ...


4

This question sounds more appropriate for the Linguistics SE. I'll answer it here anyhow. ASL is based on French Sign Language, the first sign language teacher came from France. AFAIK, the Franch sign language formed spontaneously as soon as there were cities and communities of deaf children. When there is no sign language, but other people who are deaf, ...


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I guess the best way would be to convince a blind person to take some psilocybin mushrooms or LSD. Perhaps they would actually see some fractals and stuff, since those visions are generated in the corresponding areas of the brain. Even if not, then the blind person would definitely feel the psychedelic effects: the acute perception of self and the ...


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