Brandon Berg wrote:
> "Brett Robson" <deep_m_m@hotmail.com> wrote in message 
> news:cm4rhi$ou6$1@nnrp.gol.com...
>>I'll give you a hint, there are only 3 primary colours.
> 
> I'll return the favor: I know that. Is your argument, then, that color is a 
> useless concept because not every color is a primary color?

You're both wrong.

This is not because the eyes of the human species are only receptive to 
three separate wavelength (as well as having seperate wide-spectrum 
receptors that enable to perceive the "luminosity") that this limited 
perception fully reflects the reality of things.