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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Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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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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