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TIL time seems to only flow in one direction at the macroscopic level but that is not the case at the microscopic level. This phenomenon is known as the "arrow of time paradox" and it's one of the many unsolved problems in physics.

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awdvb TIL that in 1873, the Northern Pacific Railway renamed the city to Bismarck, in honor of German chancellor Otto von Bismarck. It is the only US state capital named for a foreign statesman
b9nnN TIL: A Starbucks hot “venti” latte and “grande” latte each have exactly two shots of espresso. The extra dollar you’re paying for the larger size is essentially buying you 4 ounces of frothed milk.
WWAB TIL Terry Gilliam’s ‘Trilogy of Imagination,’ (Time Bandits, Brazil and The Adventures of Baron Munchausen) are about the “craziness of our awkwardly ordered society and the desire to escape it through whatever means possible” shown through the eyes of a child, a man in his 30’s and an elderly man.
4kBXb TIL that in 2009 the US launched a satellite so secret that no government agency admits to owning it. Even the name, "Palladium at Night", is mysterious.
16Bg4 TIL of handkerchief color codes, used as a way to non-verbally express sexual activities and fetishes. Red is for fisting.