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TIL That Europeans In The Middle Ages Used To Sleep In Two Shifts, Dedicating The Period Between Their 'First Sleep' And 'Second Sleep' To A Range Of Activities

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M7XnV TIL that there has been an alternative to the standard http internet, called Project Xanadu, in continuous development for the past 62 years, and was called "the longest running vaporware" even back in 1995.
jN8PN TIL The oldest occurrence of the word "fuck" in adjectival form in English comes from the margins of a 1528 manuscript copy of Cicero's De Officiis. A monk had scrawled in the margin notes, "fuckin Abbot".
BraXL TIL a 2011 study showed that a group of 4 year olds had a temporary lapse in cognitive function after watching 9 minutes of SpongeBob
BrbVb TIL Victoria's Secret bras have RFID tracking technology in them, so they can collect information on you as you wear them for their own marketing analysis.
ANGGl TIL that the 800 number system for toll-free calling, invented in the US, now exists around the world. Many countries have toll-free phone numbers that start with "800", "0800", "1800", etc. There is also a +800 country code for international toll-free calling, but not all countries participate.