Python and Flaming Thunder

[Dave Parker]

On May 13, 7:44 am, castiro... at gmail.com wrote:
> I am not convinced that the colorspace occupies three dimensions necessarily.

Apparently there are some people -- called tetrachromats -- who can
see color in four dimensions.  They have extra sets of cones in their
retinas containing a different photopigment.  So, the dimensions of
color appear to be an artifact of our visual systems, and not inherent
in the colors themselves which are linear (one-dimensional) in
frequency.  http://en.wikipedia.org/wiki/Tetrachromacy