The hole in the soda can tab is actually used to hold a straw in place and stop it from rising.
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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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While filming a guest appearance on Star Trek TNG, Stephen Hawking was taken on a tour of the USS Enterprise set. When he saw the Warp Core, he paused, and said “I’m working on that.”
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Leonardo Da Vinci made a robotic lion in 1515 that would walk, sway, open its mouth and move its tail - it even had a compartment that opened to present flowers.
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Paul McCartney dreamed the melody of "Yesterday" one night and immediately wrote the music the next morning. He then looked around for a month to make sure that he didn't subconsciously plagiarize it from somebody else.
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