If you turn around the retina’s cells without also reprogramming the nerves and optic cable, the system as a whole won’t work. It doesn’t matter that, to a Fairy or a human engineer, this is one step forward in redesigning the retina. The organism is blind. Evolution has no foresight, it is simply the frozen history of which organisms did in fact reproduce. Evolution is as blind as a halfway-redesigned retina.
Wow
