On Sat, Jul 17, 2010 at 08:57:42PM -0400, [email protected] wrote: > > Shephard points out (in his paper speculating on why > humans have a 3D color space) that for terrestrial > animals (at least, ones that live above the scale > where things like surface tension of water and > viscosity of the atmosphere are big deals in daily > life), the vertical axis defined by gravity is > highly salient. What, we may ask, would a porpoise > or a porgy make of your photo? > > Lee Rudolph >
This seems to be a non-sequitur. Most mammals have a 2D colour space. Many birds (and a few rare humans, so called "tetrachromats") have a 4D colour space. What possible connection could it have with the spatial dimension? -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Mathematics UNSW SYDNEY 2052 [email protected] Australia http://www.hpcoders.com.au ---------------------------------------------------------------------------- ============================================================ FRIAM Applied Complexity Group listserv Meets Fridays 9a-11:30 at cafe at St. John's College lectures, archives, unsubscribe, maps at http://www.friam.org
