https://www.newyorker.com/magazine/2020/05/04/the-man-who-thought-too-fast
Ramsey Theory, which analyzes order and disorder. (As an Oxord methematician, Martin Gould, has explained, Ramsey theory tells us, for instance, that among any six users of Facebook there will always be either a trio of mutual friends or a trio in which none are friends.)
