How Rock-Paper-Scissors Applies to Lizards

Chris Higgins
YouTube / Numberphile
YouTube / Numberphile / YouTube / Numberphile

We've written about how to win at Rock-Paper-Scissors and advanced Rock-Paper-Scissors variants, but here's something truly novel: A species of lizard (Uta stansburiana) exhibits a Rock-Paper-Scissors dynamic in the wild. No, they don't count down and throw fists; Hannah Fry explains that this is more about how a particular ecosystem works. It's fascinating to see this kind of three-party math at work in the natural world. Behold: