Fractal planting patterns yield optimal harvests, without central control

Bali's famous rice terraces, when seen from above, look like colorful mosaics because some farmers plant synchronously, while others plant at different times. The resulting fractal patterns are rare for man-made systems and lead to optimal harvests without global planning.
Read more: https://phys.org/news/2017-06-fractal-patterns-yeild-optimal-harvests.html?source=Snapzu