The Color Thing...

Okay, well at Chrystal's behest I'm going to try to explain my little color question in print, so to speak.

Alright, so think about colors for a second.  Colors are in reality various wavelengths of visible light; and object with a specific color, say red, absorbs all the other wavelengths of visible light and reflect back only the red wavelength.  The light enters our eye and is processed by the brain, and we can tell the object reflects red wavelength light.

However, here is the Question....
How can we know that the "color" I "see" when I look at a wavelength of light is the same color that you see???? 

The name of a particular color (such as red) is something assigned by language, and in reality, names the wavelength of light; in red's case, around 625-740 nanometers (nm).  So in school we are essentially taught that wavelengths of x nm are red, and y nm are blue, and z nm are green and so on...

But the interpretation of the wavelength into a visual representation (i.e. what we "see") is something that is done inside your mind.  So how can it ever be known what "color" individual people see when they look at each wavelength?  For all I know, the "color" my brain creates for "red wavelengths", may be the same "color" that your brain creates for "blue wavelengths"??  Or we may each see "colors" that the other person has never see?

Anyway, it is fun to think about... 

(I will let everyone in on a little secret,  I don't ask this question for an answer, It's more of a psychological test, I want to see how you react to it, how you process it; a fun and quick way to pry into how someone thinks.)