Depth perception. Do we actually see the world in 2D?

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Do we actually see the world in 2D? I remember reading somewhere that we don't really see the world in 3D, but rather in 2D.

My understanding is it's 3d - height, width, depth.

We do see the world in 2D, like an image projected onto a screen, however, our stereoscopic vision and certain visual cues allow us to gauge the distance of object's in our field of view.

What confuses be about these theories is that i can feel 3d. I can close my eyes and feel a wooden cube has height. width, and depth. I'm also allowed weight, temperature, and texture. Illusions?

people with monocular vision [eyepatch wearers and such] see 2d with some quasi-3d mental extrapolation of the distal sides of objects.

Our eyes give us two two-dimensional views which we extrapolate to a likely three-dimensional space based on our previous experiences, which includes our knowledge of the universe as gained from sight, touch, hearing, and other senses.

I don't believe the three-dimensional universe is an illusion. It is a convenient way of classifying reality as we currently experience it. As far as some of our senses experiencing things one way when other senses tell us they are another, it's a big universe, and one person can only absorb so much of it at a time.

our visual system can only [relatively crudely, for the most part] resolve light wavelengths between 400 and 700 nanometers. there is a whole universe of EM spectrum beyond those limits, that humans can never discern from their blinkered reality. living things look a lot different at different wavelengths, and in fact are transparent at some frequencies in the spectrum, as demonstrated by the late scientific investigator george meek-

the above image was taken using a large custom made 18A ratten light filter which would fit over the fluorescent light fixture in the ceiling, so when the incandescent lights were turned off and the filtered fluorescent lighting was turned on, light between 400 and 700 nanometers in bandwidth could not enter the lab. Since that light is the range of human vision, the room appeared dark to anyone standing in it. For one series of experiments, George mounted a 35mm Minolta camera on a tripod. The camera had an attached film magazine loaded with a large roll of 400 ASA Fuji color print film. The camera took 100 pictures in rapid succession while George sat in the chair in the artificial "dark." notice that the chair can be seen through george's legs. the pic below shows more of the transparency of the human body outside of the human visual bandwidth-

this is fascinating.

This is intriguing..

Hmm. Was George moving at all while those pictures were taken? Why can I see through his legs but not any other part of his body (maybe also his head)? And is clothing transparent at those wavelengths too?

I can't really tell what's going on in the second photograph.

i dont really know what argument it poses though because the electromagnetic spectrum is as much a part of the known physical world as anything else, it interacts directly with it and what is shows is a direct consequence of it.

It does make sense that at least some (most) types of energy would be able to pass right through us. Seeing it expressed in a visual medium somehow makes it seem that much more real, though.

What we "see" is made up of more than just what comes into the eyes. Sound plays a part too, as does touch, taste and smell, although sight plays the biggest part.

When we see something we see it in 2d but if we move and change our point of view we are effectively "scrolling" through to another 2d image that is related to the previous one.