No we don't. For example, my slight color blindness renders me unable to tell the difference between certain shades of colors. How could you possibly see what I see? You can't. How could I possibly know how others percieve them? I can't. To me, they are reality, even though different from other's reality.
.....by the way, why are we talking English all of a sudden? 😛
But it's different if you have some sort of color blindness: of course you're gonna percieve some colors different then. But is it totally ureasonable to say that the grey colors of this forum is the exactly same for most of the people viewing it? Even though people in general can be quite different, and percieve different things about the environment, we also share some fundamental things, otherwise it would be quite hard to understand each other. Couldn't color perception be one of those things?
If colors are percieved differently by all people, how can there be such a thing as "color blindness"? If dark colors to me, are bright colors to you, then will you have to have all your lamps lit in order to sleep? 🙂
People have agreed to have a certain type och color shade attached to a certain name.
People ho deviata from this agreed norm are the ones that are different not the other way around!
And it then comes down to indivudual actions by nerves more or less. Ther is no telling how you look at one specific color. What you SEE as blu might very well be green in my eyes. BUT this is not possible to check. I ask you to paint blue.....you paint what you see as MY green, but it will still come out as my blue.
Furthermore, its all about psychology, about perception. One could argue that it is the wavelength of light that determines the color (true) but no one knows what happens inside the physical parts of each individual, and even less within the "software".
Wo know nothing.
Waruum sprechen wir nicht deutsch? Das geht ja auch ?