Cellular automata have a built in speed limit, so it could be something like that. If one cell's state depends on only its immediate neighbors state, then logi

Cellular automata have a built in speed limit, so it could be something like that. If one cell's state depends on only its immediate neighbors state, then logically no object can move faster than one cell diameter per frame. And if you had shared state between two non-adjacent cells in certain limited cases, that could create "faster than light" behavior.