h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

everything we see is actually upside down (that's how it arrives through the lens of the eye to the back of the retina), our brain inverts the image to allow us to understand it.

does that help?

(me studied eye anatomy because i have glaucoma and it helps me understand the the dr's better)

I thought that everything we see is actually just the right side up. Like with a car, the tires are down on the ground with the car being on top of them. That is, unless the car just careened off the street, flew across the ditch and turned over a nice even number of times . It is just that our eyes get it the other way around while our brain insists on some kind of normality, the lazy thing.

So far so good, but why did you impart your knowledge on me? Did I, at some point in the past, ask about that in a thread promptly forgotten and out of my mind?

Or are you trying to engage me in conversation? In this case, hi, I am Yelbakk, welcome to my world of nonsensical meaning.

Y.