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The Shoelace Catastrophe
Readers of this site might be interested in the following paper appeared in the Proceedings of the Royal Society and has received considerable attention in the media:
The paper discusses a mechanism for the the accidental untying of a shoelace knot that many of us, including me, experience on a daily basis. The failure is sudden and catastropic as can be seen in the following video:
and news article
We hope the work inspires further works on the topic of physical knots.