› added 2 months ago

8

TIL that 0.999 repeating is the exact same thing as 1. Not close. Not similar. Exactly the same number. 0.999… = 1

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aNEJ TIL that Grapefruit juice can have severe side effects (including sudden death) when mixed with common medications
5YdQD TIL that when dinner forks were introduced to Europe in the late Middle Ages, they were considered to be a tool of the Devil and were thus banned by the Catholic Church
MeggK TIL of the Benjamin Franklin effect that causes people to like someone more after doing them a favor. When Franklin asked his rival for a rare book and returned it with a note of thanks, Franklin’s rival spoke to him with great civility and offered help, leading the two men to become good friends.
VgWk TIL Gillette created an animated video on how to shave your genitals. [NSFW]
9w6dG TIL the leading hypothesis for why zebras have stripes is because it helps prevent horse flies from biting them.