Study On Why Shoes Come Untied

Shoelaces sometimes get untied, no matter how tight you knot them, and a new study looks into why that happens. Engineers from the University of California, Berkeley explain whipping forces act like an invisible hand, loosening the knot and then tugging on the free ends of your laces as the whole knot comes undone. Researchers also say the "square knot" holds up better than the "granny knot".

Harold Mann

Harold Mann

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