Déjà vu occurs when your brain tries to apply a memory of a past situation to your current one, fails, and makes you feel like it's happened.
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The New York Stock Exchange started as a coffee shop!
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Some nursing homes in Germany have fake bus stops to keep Alzheimer's patients from wandering away.
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The chlorine smell in swimming pools is accentuated by the chemical's reaction with impurities (like poop.)
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Passengers on the Beijing subway can pay with plastic bottles.
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When withdrawing money from an ATM, the 'whirring' sound before your money pops out is actually a recording. The actual mechanism is so far back that you can't hear it.
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The French named one of their aircraft carriers after Ferdinand Foch, a man who once said "Airplanes are interesting toys but of no military value".
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