/sci/ - Science & Math

>>14592480
>Sensitivity to light is useful to many simple organisms
Of course
>some other use
This makes no sense, how would an iris or a retina benefit an organism except through vision, if you want a more microscopic example, pic related is cyanobacteria sensing light, and are probably the first to have evolved this sense. They see using the cyanobacteriochrome protein, every source I've found online only mentions this protein in its ability to sense light, what other use could the bacteria have obtained from the parts that make it?
I think evolution is obviously real, and I'm not Christian but expecting this sort of blind evolution with little to no selection to result in these wonderfully complex structures not just once for the eye, but dozens of times for each an every function of an organism, just requires faith at this point, and is equally scientifically rigorous as someone telling you "God did it".