This is an off-topic branch of a thread about the Belgian Color Code on Lace.
I read an installment of the Prince Valiant comic strip that managed to get three book-wall interfaces into two panels: the villain goes through a door, unable to see the warning sign because it is red. The author could have covered this by saying instead that the villain, who was in a bit of a hurry, *didn't notice* the sign because he couldn't see that it was red. But on the other side of the door is an *unheated* warehouse filled with sawdust that is dusty dry because it is winter. A *british* winter. And then, several months after the warehouse was filled, there is still enough wood flour in the air to cause a spectacular dust explosion! It's just as well that you can't throw a comic strip against the wall -- I read the newspaper in a room with a glass wall. Umm . . . what I logged in to say is that the standard-issue human has three color receptors. We call this sort of vision trichromatic. If one of the receptors is missing or defective, we say "color blind", but he isn't really, he's dichromatic. A truly color-blind person would have only one functioning set of cones. (Is there such a thing as a "dayblind" person who has no cones at all, and has to get by on the rods?) A dichromat might say that two colors match when a trichromat sees them as completely unrelated, but he sees the full range of colors -- he just doesn't make the same distinctions. It isn't uncommon for a dichromat to get well into adulthood before finding out about it. And then there are "color-blind" trichromats in whom all three receptors are working, but one or more isn't working well. It takes a sophisticated test to detect one of these. But what interests me most is that there are also a few people with *four* functioning sets of cones. I presume that tetrachromats go through life wincing at what the rest of us are wearing, and trying not to look at four-color printing and RGB displays. -- Joy Beeson [EMAIL PROTECTED] http://home.earthlink.net/~joybeeson/ http://home.earthlink.net/~beeson_n3f/ west of Fort Wayne, Indiana, U.S.A. where the wind has died down and all our fallen leaves are somebody else's problem. To unsubscribe send email to [EMAIL PROTECTED] containing the line: unsubscribe lace-chat [EMAIL PROTECTED] For help, write to [EMAIL PROTECTED]
