“So HOW do we see as many different colors that we DO see? There’s nothing in the article about that.”
We see different colors due to combinations of light frequencies,
Any pigments does not produce a single frequency. It emits a combination of frequencies.
Look...the article is up for grabs, some agree with it, some don't, but when all is said and done, what it really boils down to is WHO CARES?
The accompanying photos are CRAP! Not everything in the first photo, of fruits and veggies, include RED items that don't belong, since the article is about PURPLE.
The spectrum chart is also off since it omits shades.
If, as you state, in garbled, incorrect English: "Any pigments does not produce a single frequency. It emits a combination of frequencies", then each color, on it's own produces MANY frequencies.
Yet colors that are a combination of other colors, such as green, would produce even MORE frequencies?
Then WHY would different people see the same color differently, IF we are all seeing the same frequencies and does it even matter?
And IF people who are colorblind have brains that aren't broken/inferior/whatever, then WHY are they colorblind?
What about people who aren't colorblind but see a color or many colors differently?
Because I am color sensitive/shade sensitive ( meaning that I can easily tell the differences in tone and quality ), does that mean that my brain works better than most, or just differently? Or is it that this is because I have been painting most of my life?