For serious discussion of the controversies, approaches and enigmas surrounding the origins and development of the human species and of human civilization. (NB: for more ‘out there’ posts we point you in the direction of the ‘Paranormal & Supernatural’ Message Board).

Some women are known to have tetrachromacy. The ancient were well aware of such individual differences and would have utilized them for scientific ends. Near sighted people were their microscopes. They were each very aware of their senses because of the way they thought.

Measuring the angle between "yellow" and "blue" in each the rainbow and moon bow would have been very easy for a tetrachromatic. I think I could do it except my memory for color is poor. My range would probably exceed the actual measurement.