今天不小心看到了这个blog:
网球拍定理的前生与今世:从费曼到陶哲轩
https://blog.sciencenet.cn/home.php?mod=space&uid=420554&do=blog&id=1207100
mathoverflow的帖子,及其陶哲轩的回答
https://mathoverflow.net/questions/81960/the-dzhanibekov-effect-an-exercise-in-mechanics-or-fiction-explain-mathemat
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FROM 124.14.44.*