Oh please. Your eyes are a system rife with bugs. You have a blind spot that exists for absolutely no good reason - the bundle of nerves can just as well connec

Oh please. Your eyes are a system rife with bugs. You have a blind spot that exists for absolutely no good reason - the bundle of nerves can just as well connect to the back of the retina rather than the front. About 50% of people have a defective lens, which can only be corrected by putting yet another lens in front of it (in frames, directly on the eyeball or by ablating the eyeball in order to turn it into a lens). You can be near-sighted AND far-sighted at the same time. Your eyeballs contain imperfections called floaters that your body has no way of removing, so your brain learns to filter them out. You constantly see your own nose. Some people's eyes are misaligned and they have no depth perception. The colour violet doesn't exist, your red cones are actually activating in response to your blue cones detecting high-frequency blue light. And I don't mean they activate in response to the light, physically the red cones don't detect any of the wavelengths of violet light - they're just wired up in such a way that a low activation of the blue cones triggers activation of the red cones. Some people have a defect that makes their red cones activate in response to wavelengths too close to green light, so they can't tell the two apart. Some are just completely colour-blind. Oh, and the image you get in your eyes is rotated 180 degrees. Your eyes most definitely don't do just one thing and they most certainly don't do it all that well. But they do an important job reasonably well, which is what strive for in any large software system.