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TIL that In 2008, Usain Bolt set the world record for the fastest 100 metre sprint with one of his shoelaces undone.

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KnnE TIL that Mexicans have the highest average annual hours worked in the world, yet is the least productive country out of of those listed by OECD
lo1M1 TIL A French doctor lured as many as 60 Jews into his home under the pretence of safety from the Nazi occupiers. He then killed them with his own gas chamber.
GQdQ TIL a 3rd person was shot during JFK’s assassination. He was rejected from attending the 50th commemorative event at Dealey Plaza even after petitioning the mayor
Oorm1 TIL William Wrigley, founder of Wrigley’s Gum, invented direct mail marketing. In 1915 he mailed a pack of gum to every person in the phone directory in the United States.
rRA11 TIL that sound forensics make it possible to reconstruct speech or other sound by watching leaves of a plant, earbud speakers or a potato-chip bag with a camera, even through soundproof windows.