In the human eye, light passes through all the nerve fibres and blood vessels before reaching the photoreceptors. This curious arrangement means that the blood vessels cast shadows on the back of your eye, and it explains why the capillaries can be seen if you look through a moving pinhole. Surely a master creator wouldn’t have made a mistake like that. After all, the squid eye is designed the other way around, which raises the possibility that the mythical intelligent designer of life considers cephalopods a higher form of life than humans.
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