The coin falls almost half the time on one side and almost half the time on the other. But it is not a disk with only two sides, rather, it is a very short cylinder, hiding another dimension between its faces, hiding its thickness, slight but not completely negligible. Every few thousand or tens of thousands of tosses, the coin lands on its edge, even on a surface as uniform as endless marble. It stays there, standing up, after it twists and turns a while, clinking against the soft surface, fighting against all the statistical demons. Sometimes, very rarely, you wrestle with the angel and
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