Colour Blind?

[Xanth]

Here's a question for you all...

Does a person who is "colour blind" see colour incorrectly?

[Bluefirephoenix]

Okay not sure if this is retorical, but colour blindness is when a person cannot determine the difference between two colors that cast the same shade when viewed in black and white... usually they are opposite colours on the colour wheel.

[Xanth]

I guess my question is in relation to this:  colours... as defined by whom? 

[Kzaal]

I guess my question is in relation to this:  colours... as defined by whom? 

Xanth, I'll say this cause I already had this discussion with an old friend of mine about 5 years ago

We can't know what the other one sees.
Blue for me could be red for you, but for you, the red you see has always been called blue so you know it's blue.
Colours are defined by an agreement... values (black/white/greys) are the same however(I think)...
We can't know, someone could see the grass purple but they've been taught all their life that purple was green... someone could see psychedelic colours but for them it's natural... It's all about how your brain interpret the information it gets from your eyes.

Now, there might be some discussions about natural colour refraction where every colours would be the same for everyone because of the speed of light but I don't believe that could be the case because every person's has different cones/amount of cones in their retina's...
For Colour blind people their cones are not wrong or anything, they just don't have the same amount or non-working cones in their retina's.
Try explaining colours to a totally blind person. It doesn't make sense to them, they feel objects, their brain make a 3D "render" but they don't see colours...

I think we could possibly all see colours differently...

[Bluefirephoenix]

ah  I see your point. THe colors can be consistently reproduced by all but a certain male population. The colour wheel that represents modern interpretations was not invented until the 16th century.

I had an interesting conversation with my friend from the 16th century who was unable to label colors in the same way we do. The result is interesting. You assume that everyone sees and labels the colors the same but when it doesn't happen that way it's quite confusing.

[dotster]

Look up Enchroma glasses, and also reaction videos to people trying them on. I'm not sure if it will help answer your question but at the very least it's a wonderful thing to watch.

[Xanth]

Look up Enchroma glasses, and also reaction videos to people trying them on. I'm not sure if it will help answer your question but at the very least it's a wonderful thing to watch.

To be honest, it wasn't a question I personally wanted answered.
It was, as some figured out (), a question to get everyone to consider "individual perception".   

[dotster]

To be honest, it wasn't a question I personally wanted answered.
It was, as some figured out (), a question to get everyone to consider "individual perception".   

I thought it was a pretty decent example of how easily individual perception is influenced.

[Astralsuzy]

The army reserve do not accept people if they are colour blind.   If people see colours different they are not allowed in the army reserve.   Years ago my son wanted to be in the army reserve.   He did not know he was colour blind.   He got that passed on to him from my father.   My son passed all the tests except for the colour test so he was not allowed in.   At the time my son was very disappointed but when one door closes another door opens.   He travelled and met a girl.   He would not have had those adventures if he joined the army reserve.