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TIL the kidnapped British aid worker Linda Norgrove was killed by a grenade thrown by a Navy SEAL during a failed rescue operation. The SEALs did not immediately notify senior officers about throwing the grenade; this breached military law, and a number of sailors were disciplined

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kO0xg TIL Goodhart's Law, the principle that when a measure becomes a target, it ceases to be a good measure. For example, when a government tries to bring down unemployment figures to demonstrate how well the economy is doing, unemployment figures stop being a good measure of the economy.
R7pvQ TIL that till 1915, It was legal to mail babies from one place to another in America, If they were under the 11 pound weight limit.
KO7Z6 TIL Laughter evolved from labored breathing, and people are 24 times more likely to tell apart friends from strangers based on a short audio clip of the two groups laughing.
5VE9 TIL Russian and Japan still haven’t signed a peace treaty to end World War II
Z8EOR TIL Your smartphone is millions of times more powerful than the Apollo 11 guidance computers