Meet The Bille, A Self-Righting Tetrahedron That Nobody Was Sure Could Exist

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English mathematician John H. Conway (1937–2020) is probably best known for his invention of the Game of Life, also known as Life. It is a game played on a square grid. Each square can be either colored or blank, in the terminology of the game, alive or dead. What do you remember from mathematics? Every elementary school graduate should be able to handle this simple quiz. When you initially place the living squares, they begin to multiply and di…