Extension To Multiple Ants
Multiple Langton's Ants can co-exist on the 2D plane, and their interactions give rise to complex, higher order automata that collectively build a wide variety of organized structures. There is no need for conflict-resolution as every ant sitting on the same square wants to make the same change to the tape. There is a YouTube video showing these multiple ant interactions.
Multiple turmites can co-exist on the 2D plane as long as there is a rule for what happens when they meet. Ed Pegg, Jr. considered turmites that can turn for example both left and right, splitting in two and annihilating each other when they meet.
Read more about this topic: Langton's Ant
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