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TIL 10% of all people over the age of 60 have Alzheimer's disease, and as many as 50% of people over 85 have it. The number of people with the disease doubles every 5 years beyond age 65.

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R5ok9 TIL the “20Q” (20 questions) handheld game, a toy released in 2003 and famous for its scary level of accuracy, actually used a basic implementation of an AI neural network. It used training data gathered from users of a web-browser based implementation of the game which launched in 1994.
R7vDl TIL In 1862 Lincoln signed the Morrill Act which took 10.7 million acres from 250 tribes creating violence-backed land-grab universities as the root of higher education, economic development, and improved quality of life. Lincoln ordered 38 Dakota resistance hanged, the largest ever mass execution.
4kBD5 TIL that swinging our arms when walking makes us spend less energy and walk faster than if we tried to hold them still.
gMr8A TIL Ali Farka Touré (3-time Grammy award winner) was the tenth son of his mother but the only one to survive past infancy.
Br19D TIL up until she was 8 years old, Liv Tyler believed her biological father was rock musician Todd Rundgren. It wasn’t until she met Steven Tyler and noticed the resemblance between her and his other daughter Mia, that Liv’s mother revealed the truth.