It’s been that way since long before the dawn of humanity itself, and will be that way long after we ourselves are gone (unless all we leave behind are cockroaches), so don’t sweat it - our understanding is irrelevant to its continued functioning regardless:-).
WTF, for some reason, reading about all this stuff is seriously freaking me out about my eyes. https://en.wikipedia.org/wiki/Dark_current_(biochemistry)
It’s been that way since long before the dawn of humanity itself, and will be that way long after we ourselves are gone (unless all we leave behind are cockroaches), so don’t sweat it - our understanding is irrelevant to its continued functioning regardless:-).