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TIL How John Maynard Keynes changed Economics

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76N7 TIL That on September 10th, 2001, Secretary of Defense Donald Rumsfeld gave a speech that $2.3 Trillion of Pentagon funds had been unaccounted for, a figure that equated to $8,000 per US citizen that could not be traced to any transactions.
OoyO1 TIL 'dyscalculia' is difficulty in learning or comprehending arithmetic, such as difficulty in understanding numbers, learning how to manipulate numbers, performing mathematical calculations and learning facts in mathematics.
KOmm4 TIL in 1633, a Turkish gentleman by the name of Lagâri Hasan Çelebi launched himself into the air on a rocket filled with 140 lbs of gunpowder. He landed in the river and was rewarded with silver by the Sultan. Mythbusters later tested this story in 2009 and considered it implausible.
6j6Q TIL that Gangnam Style was so viral and gathered views so quickly, YouTube had to change the view count system to prevent a stack overflow as the original 32-bit integer system tops out at ~2.14 billion.
jaLX TIL that old batteries are recycled into fertilizer to help grow corn.