Christopher Night wrote:
The idea is that if we could independently stimulate each of the three colors receptors (cones) in our eyes, then we could reproduce any visual sensation and thereby any color. The problem is ... there's no such thing as a wavelength of light that stimulates the middle (green) cones without also stimulating either of the outer two.
But that means we never experience the sensation of having just the green cones stimulated, so there is no need to reproduce it. -- Greg
