Bio-evolutionary Hypothesis for Absence of Green or Purple Stars
Take the evolutionary approach, and explain it by narrow spectra of survival-critical (evolutionarilyy rewarding) plants spectra due to narrow-spectrum chlorophyll and retinal.
So, various sources explain that human eyes have evolved to view yellow and green radiation [1], presumably because our Sun emits radiation primarily in those wavelengths, but that, perhaps is not a full story.
Here is a hypothesis I just thought of, that I had not known before:
- Animals must have evolved specific sensitivity to chlorophyll green, because plants are a source of food, and so, we had evolutionary pressure to evolved sensitivity to very specific wavelength of green color.
- Regarding the absence of purple stars, according to the Purple Earth Hypothesis, photosynthetic life forms of early Earth were retinal-based rather than chlorophyll-based, so early animals must have evolved the narrow-spectrum purple due to the same kind of evolutionary pressure.
What that would imply, is that we don't see green or purple stars not because they don't exist, but because of both biochemical and perhaps even neurological adaptions for narrow chlorophyl/retinal spectra. If these reasons are neurological more than biochemical, then one could say that we don't see green or purple stars because of psycho-optical illusion, similar to the hollow face illusion (rotating mask illusion), and say that green and purple stars do exist, we just don't see them the way we should, our eyes are biased.
This is an idea of a scientific hypothesis with an explanatory power to the question: "Why we don't see green or purple stars?"
因此，我們或許可以製作特殊類型的眼鏡來糾正這種認知偏差。
這種眼鏡必須通過將非窄帶綠色和紫色濃縮到我們感知的特定窄帶中來彌補對廣譜綠色和廣譜紫色的感知不足。這種補償有點像減少綠色和紫色分佈的標準偏差。
有了這樣的矯正眼鏡，我們就會看到綠色的星星和紫色的星星，如果它們真的在這些顏色上達到頂峯的話。
So, we could perhaps make special type of eye-glasses that correct for this cognitive bias.
Such glasses would have to compensate for lack of perception of broad-spectrum green and broad-spectrum purple colors by condensing the off-narrow-band greens and purples into the specific narrow bands that we perceive. This compensation would work a bit like reducing the standard deviations of green and purple distributions.
With such corrective glasses then we would see green stars, and purple stars, if they actually peak at these colors.