Related: you can rotate a square by translating each quadrant to the position of its neighbor, and repeating recursively within each quadrant, until you stop at

Related: you can rotate a square by translating each quadrant to the position of its neighbor, and repeating recursively within each quadrant, until you stop at the single-pixel level. If you think about these mrhtods using physics, it's extremely frustrating because nothing actually rotates. At the first detail, each pixel is facing the same direction. This is fine for discrete pixels, but feels wrong. Is it valid in real physics? Do the smallest particles have orientation?