The world has a lot of different standards for a lot of things, but I have never heard of a place with the default screw thread direction being opposite.
So does each language have a fun mnemonic?
Photo credit: https://3.bp.blogspot.com/-Giy8OrYJTjw/Tfm9Ne5o5hI/AAAAAAAAAB4/c7uBLwjkl9c/s1600/scan0002.jpg
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The Spanish version is my favourite: la derecha oprime y la izquierda libera (the right oppresses and the left liberates)
It depends which bicycle pedal you’re screwing in. They have opposite threads, designed where they’re self tightening on each side.
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