It’s All In Your Head

November 1, 2010 § Leave a comment

Saga

“Probably the hardest concept to fully grasp about color is that color is all in your head. Literally. It’s a sensation, just like touch. Like any other sensation it’s (usually) caused by physical reality. But it doesn’t have any physical reality of it’s own–at least not outside your body. And–this is the hard part–color is not a property of the thing that’s causing the sensation. In other words, grass is not green and the sky is not blue. Rather, they have physical properties that make you perceive green and blue, but even that’s true only in some circumstances.”

http://www.extremetech.com/article2/0,2845,13758,00.asp

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