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TIL The number 1.61803 is considered the secret mathematical formula for beauty. This “golden ratio” appears in everything from flower petals to human anatomy to spiral galaxies. It even inspired the design of the Greek Parthenon and Apple products.

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XE0wj TIL A man who summited Everest 12 times after recovering from shattered heels, has the last name "Cool"
vdWr TIL one penny and two pence coins are legal tender only up to the sum of 20p; this means that it is permissible to refuse payment of sums greater than this amount in 1p and 2p coins in order to settle a debt. (UK)
6EnK8 TIL that mapmakers used to plant fictitious streets in their maps, so that if a person copied their map, they could point out the replication of the fake street to prove copyright infringement.
N7xeE TIL How much a billion dollars really is. If you were paid 1 dollar a second for 12 days, you would be millionaire. To become a billionaire from this method, it would take over 31 years. So, these two terms should not be seen as interchangeable, as many people would lead you to believe.
yQd58 TIL that in China there are centres for internet addiction with treatments that can be so rough that some patients have died. Some facilities use electro-shock treatment as part of the cure, and among roughly three hundred such centres in China, there have been seven reported deaths.