M.C. Escher Paintings - Part III

It's got a lot of cool algebraic properties that make it work well as an API. The real reason it worked so well was because they chose stuff like what two images next to each other, flip an image horizontally or vertically, scale an image. They looked at M.C. Escher drawings and analytically saw that scaling is important, tiling is important. It was not simply, it didn't simply fall out of the structure of the call graph,.