Earlier quoted context omitted.
The point is that "color" does not physically exist[1], it is a construct of human perception and language. Thus you cannot scientifically study color at all--if you try, what you are actually studying is human perception and language. This is not an unscientific concept, because human perception and language are naturally occurring, albeit incredibly complex, phenomena. Animals do not see colors, they react to physi…
> Animals do not see colors, they react to physical phenomena including photons. Come on. This is a roundabout way to try to define animals in terms of what they don't have -- not color perception, which many animals have, but words to describe the colors. Of course animals see colors, in the most basic biological sense. Many see colors more efficiently than we do, indeed see more colors, colors we can neither imagin…
The electromagnetic spectrum is continuous; our concept of color is a completely arbitrary way of dividing it[1] up into sections. That was the point of the Radiolab episode (and a lot of academic research before it): different human cultures divide up the electromagnetic spectrum in different ways, each of which is as valid as another.
Animals might not have this concept at all; for example it would be just as physically valid to think of the electromagnetic spectrum the way we think about sound--as a continous spectrum from "quiet" to "loud". We know that divisions are arbitrary when it comes to sound--that's why the "this amp goes to 11" joke in Spinal Tap is funny.
[1] Edit to add: only a tiny portion of it