强大的计算机还是无法很好地对绳结建模，用能根据拉力变色的材料来观察反而是个好办法https://www.wired.com/story/psychedelic-fiber-offers-a-new-twist-on-the-science-of-knotsandnbsp/ https://twitter.com/yurii_yu/status/1251081659140767746
https://t.me/private_channel_c14370a/3801
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