Re­search into the me­chan­ics of shoelace knots

Vocable (All English) - - La Une -

Learn­ing to tie shoelaces is an in­te­gral as­pect of our child­hood ex­pe­ri­ence, and no mat­ter how much prac­tice we get, they seem to come un­done one way or an­other. To an­swer the ques­tion of why, a team of Amer­i­can re­searchers has taken a very se­ri­ous look at the prob­lem and come up with some sur­pris­ing an­swers.

(Martin Meiss­ner/AP/SIPA)

How long will it last?

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