The issue of color blindness
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Assume: There is a person who suffers from a strange form of color blindness. The two colors he sees are different from those seen by other people; he perceives blue as green. However, he is unaware that he is different from others. To others, the sky appears blue, but to him it appears green. Yet both he and others use the same word for it – “blue”. Grass is green; he sees it as blue, but he calls it “green”. Therefore, neither he nor others know that there is a difference between him and others. Question: How can he be made to realize that he is different from others?
Tell him the order of the colors when looking at a rainbow
Does it have to be that complicated? Crossing the road, traffic lights. . .
Why let him know that he is different from others? Isn’t it better to maintain the same lifestyle as those around him?
Since neither he nor anyone else knows, how does the original poster know! If there’s a way to prove his differences, then just tell him directly
The original poster should first clarify the corresponding relationship between the seven basic colors—red, orange, yellow, green, cyan, blue, and purple—in his own perspective; it’s not enough to just mention blue and green.
@ljtjbx can’t distinguish blue from green, nor red from green; looking at this is useless! When crossing the road, people say to pay attention to the traffic lights, but he sees red and blue lights instead. Do you think that’s useful?
They didn’t teach him that in elementary school – stop at red lights and go at green lights； If you don’t know it’s fake, you’re just lying to yourself! It means what the original poster said is wrong!