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TIL Introverts prefer to use a different neurotransmitter called acetylcholine (rather than dopamine as used by extroverts). Like dopamine, acetylcholine is also linked to pleasure; but it powers our abilities inwards, i.e to think deeply, reflect, and focus intensely on one thing for a long time.

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9wkX7 TIL Asian and African elephants can successfully hybridise despite being in different genera. The only recorded hybrid, named Motty, died after 2 weeks however.
vOdL TIL that Point-Blank range does not mean “As close as possible”, but the range it takes to hit a target without aiming higher.
4XBg5 TIL: The last living person born in the 1800s died in 2017. When she was born, the last living person from the 1700s was still alive. In other words, we all lived alongside someone who lived alongside someone who was born when George Washington was president.
QJMeE TIL Codependency is characterized by sacrificing one’s personal needs in order to try to meet the needs of others and is associated with passivity and feelings of shame, low self-worth, or insecurity
8evpK [TIL] The Frisbee was created in the 1870's by someone throwing a pie tin. Fun fact, the pie company still exists and still sells pies.