when i explained the fact we see in 2d and infer 3d.
our eyes actually only see in 2D. Our retina has only a 2D surface area with which it can detect light coming into our eye. What our eye sees is in fact not 3D, but a 2D projection of the 3D world we are looking at.
Because of our mind and evolved brain, we can mentally reconstruct what we see in 3d, from 2D images.
It does this by using indirect information in the 2D images like light and shade, parallax, and previous experience.
our retina doesn't actually see 3D depth, we instinctively infer it. we have a good idea of what 3D is, to the point that we are normally quite unconscious of the fact we're only seeing in 2D
A warrior may choose pacifism, all others are condemned to it.
