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TIL that the Accessible Pedestrian Signal sound that gets pedestrians' attention the most efficiently is a "rapid tick," which sounds like a machine gun.

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Vjop TIL screws were invented nearly 1000 years before screwdrivers.
oBwQr TIL that "Five-O" being slang for "police" was inspired by the TV show "Hawaii Five-0" (and not the other way around). "Hawaii Five-0" was named that in honor of Hawaii being the 50th state to join the United States
loeMK TIL that both men and women laugh more at men than at women
OmDY TIL that Omnism, a belief system, is the recognition and respect of all religions; Omnists say that all religions contain truths, but that no one religion offers all that is truth.
egPb TIL Coca-Cola introduced Tab-Clear to ruin the Crystal Pepsi marketing campaign. Tab-Clear was marketed as an inferior diet drink. This confused consumers into thinking Crystal Pepsi was also an inferior diet drink. Both drinks died within 6 months.