› added 9 years ago

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TIL: The most successful intelligence operation in the Cold War; emptying supplies of Soviet Union toilet paper, forcing them to use documents, and retrieving these documents after use.

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e00bL TIL 61% of US soldiers killed in the Vietnam war were less than 20 years old. The average age of deaths being 23 years old.
NkV1 TIL a simple equation called Dawes Formula is very accurate at predicting success of marriages - “frequency of lovemaking minus frequency of quarrels”. A positive difference predicts marital happiness, a negative one unhappiness.
Meera TIL that after introducing optional screening in 2000, Iceland has virtually eliminated Down's syndrome in newborns
x66ew TIL Ernest Hemingway's paranoia has been ascribed to everything from alcoholism to bi-polar disorder to CTE, but he was indeed being followed by the FBI due to his extensive ties in Cuba
DQ7dj TIL There is an ancient Chinese notation for playing guqin zither. Each note is written in abbreviated Chinese characters, with symbols telling you which fingers, location on instrument, and plucking techniques to use