Does each language have "lefty loosey righty tighty"?
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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yes it would. we always have redundancy, especially in speech. also we're not robots, technicality doesn't matter, how we communicate does. do you get confused when people say something like "that's all behind us now" meaning the past? do you literally turn around and argue that there's nothing really behind you and they should have said in the past instead?
I don't get confused by any of this. Stop pretending like everyone else is stupid. If you're looking at the hands of a clock, they aren't moving right when they're moving clockwise half of the time. The applies to everything moving around a circle. Left and right are only useful if you're looking at a specific segment of it. Clockwise is what we use for rotations everywhere else. For example, look at this wiki page that says this: "Rotation or rotational motion is the circular movement of an object around a central line, known as an axis of rotation. A plane figure can rotate in either a clockwise or counterclockwise sense around a perpendicular axis intersecting anywhere inside or outside the figure at a center of rotation." Right is literally never even used in that page, and left is only used once. The terms don't make sense for rotations. We can make up rules for how they can be considered for rotations, but they fundamentally are not words used to describe rotations. Do you get confused when people say there are more useful words to describe a function?