I mean, no doubt you 'get' perspective and parallax and such?
I "get" it. I've been told that when normal people, who see with both eyes, close their left eye, while looking at a scene, then switch, closing their right eye and opening the left, the scene changes slightly. Somehow, when both eyes are open, the brain combines the two images into one. Impossible I say, but apparently it is true. For me, close my good eye, I don't see, close my bad eye, no difference in vision.
There was a vision test that was given to kids in school (1960-70s). It was like looking into a set of binoculars. The nurse would ask me, if the red ball was closer to the boy or the dog. I thought she was nuts! I would tell her, I don't see a ball, all I see is a red circle/red light. Then she would give me the look I gave her earlier, and in astonishment ask, "You don't see the boy or the dog?" Then of course, the kids in line would laugh. I'd get upset. It wasn't until the early teens that I finally asked the nurse to let me in on what I thought was a bad joke. She let me look with my left eye into the right lens viewer and I saw the boy and dog, but no "ball", red circle/light. It is still such a bizarre concept to me that for "normal" people, the brain combines the scene.
