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?
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If japanese has one, I've never heard it. Japanese wife hasn't either. She was surprised it's a thing. She said maybe tradesmen might, but certainly nothing everyone knows
So when someone changes a light bulb, which direction to turn is just a feeling in their bones?
That's fair.
Never heard it in Polish but we generally don't need a mnemonic to remember which side is left and which is right (except in politics).
I think it's fairly parochial, and sounds quite infantile to me. Growing up (uk) we just used clockwise to tighten.
Have a chat with some plumbers, builders, chippies, sparkys or engineers - assuming you are not one already. I think "leftie loosey ..." is well known in the UK.
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