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Do Blind People Understand Vision?

Someone asked Tommy Edison (previously at Neatorama) how much he understands about vision. He’s been blind since birth, so it’s a foreign concept to him, but he’s interacted with sighted people enough to know that we do things that make no sense to him.

(YouTube link)

Sure, you can explain how stereoscopic vision works to give us depth perception, but never having been able to see it in action, he can’t wrap his head around it. I was a little surprised he didn’t mention colors, but he made a video about colors once, and seems to associate color with different smells. As always, Edison is cheerful, honest, and always ready to make a wisecrack. -via Digg

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I agree about the color thing. In the previous video he doesn't really talk about color, just that he is told this is what a cherry smells like and a cherry is red. I would have an easier time explaining depth than color because you can still relate distance by feel in a way(a baseball 100 ft away is the size of a dime type thing). There is nothing about color that I could describe that somebody that cannot see it could in any way understand. Forget about even trying to explain how colors can carry an emotional impact.
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