At 10:05 PM 1/29/03 -0600, Robert Seeberger wrote:
http://www.liquidgeneration.com/sabotage/vision_sabotage.aspThis is a pretty neat eye test.
Actually, it looks like the standard test for color blindness. (At least the first few did: that's when I stopped.)
Everyone should take it to see if they percieve colors the same way as everyone else.
What I would like to see (and I have no idea how to design such a test, which is why I was curious about this link), would be some way to find out if others with "normal" color vision do indeed see colors the same way I do. Frex, a test like the one at the link or the one used by optometrists confirms that the subject can indeed differentiate between the color called "red" consisting of wavelengths around 610 nm and that color called "green" consisting of wavelengths around 530 nm. However, how do I know (or can I know) whether the impression I get in my mind when I see "green" (e.g. grass) is the same impression you get when you look at grass, rather than my impression when I see green being the same one you get when you look at a stop sign?
"Once, on our mother's birthday, John bought her some very special stockings. This was to be a treat for she always wore homespun stockings. Mother exclaimed to John, "Why did you buy me scarlet stockings?" John had thought they were blue and turned to me to verify their suitable color. Since we both saw blue instead of scarlet, Mother took the stockings out to some of the other women. So at the age of twenty-six, John discovered that we were both color-blind. John experimented and wrote about this phenomenon in his first important scientific paper. Many years later when John had an audience with the King, he refused to wear the customary dress which included a sword. In a compromise, he agreed to wear his Oxford honorary doctoral robe. John thought the robe was grey, but in reality it was red, which at that time was not an appropriate color for a Quaker. The condition of color-blindness came to be known as Daltonism in France."
--from an account by the brother of chemist John Dalton on how they discovered their red-green color blindness
--Ronn! :)
I always knew that I would see the first man on the Moon.
I never dreamed that I would see the last.
--Dr. Jerry Pournelle
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