system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5; why is it our eyes see upside down and our brain has to correct it?
gpt
Look through a round glass object, like a crystal ball. You'll notice everything you see through it is upside down. This is because the light from the bottom half of it reacts with the round surface in a way that it comes out on the top, and vice versa.

Since your eye is a sphere, like that crystal ball, the brain has to correct it.

And yes, looking through that crystal ball without your brain correcting your eyes automatically would show you the world right side up (and distorted because you can't see shit through a crystal ball)