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TIL The piece that holds the rotor blades to the helicopter is known as the “Jesus nut”

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KOKdE TIL a Canadian psychologist named Elliott Jaques coined the term "midlife crisis"
x66gw TIL Quakers invented the price tag. They were invented because Quakers viewed haggling as immoral since different people paid different prices for the same item. This innovation actually made retail more efficient because employees needing less training and were able to serve more customers.
v1XOB TIL in 1995 a shirt that featured Margaret from Dennis the Menace saying “Someday a woman will be PRESIDENT!” was pulled from shelves when one Walmart shopper said it offended “family values.” It was restocked 4 months later due to women’s groups threatening to boycott Walmart.
9Y5nX TIL its Bachelor's Day in Ireland. It is an Irish tradition that takes place on Leap Day. Women can initiate dancing and propose a marriage. If the proposal was rejected, the man was expected to buy the woman a silk dress or, by the mid-20th century, a fur coat.
1axgX TIL British aristocrats often went broke after royal visits. Queen Elizabeth I spent her holydays at her titled noblemen's country estates. The problem was that Tudor monarchs didn’t just travel alone and hosts had to find housing, food and entertainment for over 300 people, often at short notice.