I had a pet theory that a large part of what made some people good at mathematics was simply memory. A large part of mathematical practice is remembering bits of trivia: standard counterexamples, definitions, little technical tricks. BBC News is reporting on a discovery that makes that seem less plausible: chimpanzees may have better memories than people do. Scientists compared the performance of chimpanzees and their closest relatives, university students, when tested on their ability to remember a random pattern of numbers on a screen. The BBC story comes with two videos of the chimps in action that are worth watching.