The Unbended Curved Bar Space Slugout Thread

Hi Buzz. Yes, as Mr Hook from your link says, the image received by the retina is essentially two-dimensional and flat. What's really crazy, though, is that the "screen" that the image is projected onto (i.e., the retina) is actually curved in three dimensions!!! Look! A flat 2D image on a curved 3D screen!!! Wow!Wrap your head around that, and you just might understand the argument yet!Edited by Bluejay, : No reason given.

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-BluejayDarwin loves you.

Hi, Buzsaw. I wasn't talking about the 3D world, Buzz: I was talking about the 3D retina.Take a piece of paper with some writing on it. The surface of that paper, and all the letters on it, are only 2-dimensional. Pay particular attention to the lower-case letter "l".Now, curl your paper into a C-shape in your hand and look at all the little l's again. Do they still look like l's, or have they all been bent into C's because of the curvature of the paper?Of course they still look like little l's, because you only read l's in two dimensions: the third dimension isn't taken into account for the shapes of letters (did you ever see the movie Contact?---the aliens in that movie had 3D writing that the scientists couldn't figure out because they were trying to interpret it in 2D).In the same way, we only define "straight lines" in three dimensions: the fourth dimension isn't considered. It's only confusing because, in my paper example, you can actually see the third dimension, but, in the "unbent curved bar space" example, you can't see the fourth dimension in which the curvature happens, so you think it's completely bogus.

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-BluejayDarwin loves you.