Hannah Fry, in this Numberphile video, tots up the cases of rock-paper-scissors mathematics as applied to lizards: This goes back, more or less, to a sex study published in the year 2000: “Polygyny, mate-guarding, and posthumous fertilization as alternative male mating strategies,” Kelly R. Zamudio and Barry Sinervo, PNAS, 2000 97 (26) 14427-14432. Here’s a photo of rock-paper-scissors/lizards […]