20260619 随机不是慢慢来的：洗牌背后的数学临界点

一副扑克牌究竟要洗多少次才算真正随机？三十多年前，数学家给出了著名的“七次洗牌定律”，但它有一个几乎没人能做到的前提：每次都要精准对半切牌。二十六年后，一群年轻数学家终于解决了这个更真实的问题，并发现答案竟然翻了一倍。从扑克牌到量子材料，再到人工智能中的MCMC算法，一个关于“随机性何时突然降临”的数学谜题，揭示了隐藏在复杂系统背后的普遍规律。

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20260619 随机不是慢慢来的：洗牌背后的数学临界点

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