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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21 points

Clockwise and counter-clockwise makes sense.

But when you say “right” it’s not clear which side of the circle is being referenced. If the top of the circle is moving to the right, the bottom is moving left at the same time. So the saying only makes sense when you specify that you’re talking about the top of the circle.

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-10 points

What the fuck are you talking about.

You’re either rotating the fastener to the right or the left.

It doesn’t matter what side you’re talking about, because you’re not moving one side of the fastener, you’re rotating the whole thing one direction or the other.

Clockwise just means something is rotating to the right.

If I ask you to turn around to the right, are you going to ask me what side of you I’m referencing?

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16 points

Here is clockwise. One arrow is going to the right and one to the left.

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-5 points

The whole thing is rotating to the right, that’s what clockwise means. Clocks rotate to the right. One arrow is not pointing left, it’s pointing in the direction of rotation, which is to the right.

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11 points

I tend to agree but you could argue that from a perspective in the center of the rotation you’re turning to the right. Imagine standing in the center of those arrows.

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3 points

What happens if you look at it from the other side?

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8 points

If I ask you to turn around to the right, are you going to ask me what side of you I’m referencing?

No, because humans have a pretty clear forward direction. Screws don’t. You say turn a screw to the right, do you mean make the top of the screw move right or the bottom move right?

Most people assume the top, but not all, and the language is ambiguous.

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-4 points

The “front” or “forward” direction of a screw is clearly the face of the fastener itself, be it a hex head, Phillips, or Slotted screw. Picking a side of a face as the front doesn’t make any sense. The whole thing needs to rotate one direction or another, and it will either rotate to the right to tighten, or the left to loosen.

If I ask you what the front of a clock is, are you going to tell me it’s the top curve near the ceiling? No it’s the face of the clock, and the hands rotate around it to the right.

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1 point

Slightly, anyway. If you’re both standing over the thing it can potentially be agreed on. If you’re all over the place working on some big machine you need to use some language, and I’m not aware of a standard way to do it.

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6 points

You aee assuming a top orientation moving to the right. Give somebody a wrench handle at the bottom of nut and tell them left to loosen, you will see how most take it literally and move handle to the left side of their body. they think in terms of their left and their right, not the screws right left from a starting location at top, or if from 4 oclock position to the “left of” 4 oclock as if you were facing the 4.

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3 points

Yes, it’s always the top side of the circle in this context, or you can think about how clock hands do go in a specific direction, because they’re a radius, not a circumference. There, now it’s cleared up for you.

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5 points

The clock hands move right when at the top but left when at the bottom.

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5 points

In Australia, it’s the other way around and the clock will try to eat you or at least sting you to death.

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1 point

Imagine it as if it were a track you were driving around, which way would you turn the wheel?

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8 points

It’s getting so convoluted at this point just knowing clockwise/anticlockwise is infinitely easier.

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-9 points

If a steering wheel has you this perplexed then I beg you to never ever drive a vehicle.

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2 points

Yes! That concept makes way more sense.

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-1 points

So you’re explaining rotation, in terms of a smaller imaginary rotation, which engages with imaginary traction wheels, which engage with the work to be turned?

If that works for you, great, but it is complicated.

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1 point

No im trying to illustrate the parallels between how you turn the wheel, how the car turns in response to that , and how they are all related. You turn left you will make the exact same rotational movement, with both the vehicle, and the steering wheel.

It’s as simple as, “What direction do you turn the wheel to make the car go left?” I just stacked on top “and also it makes the car itself do that same exact circular movement” so you don’t just dismiss this as some kind of arbitrary convention.

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12 points
*

you have to have never seen a steering wheel to not understand which side of the circle is being referenced. it’s always the top. who would even reference anything else and why.

“turn it right”

“which part???”

“the middle of course, you absolute alien”

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4 points

Because people get confused when there is no space for the wrench at the top, and they put the handle at the bottom and try to move the wrench left or right, not referencing the top of bolt.

Because they aren’t using the saying as a clokwise/counter clockwise reminder but as a flat out instruction.

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1 point

I think we can all understand how it functions but that doesn’t make it “correct.” It’s spinning around a circle. Exactly half of its moving right as the other half moves left. That’s why we have the terms clockwise and counter-clockwise. If left and right were actually reasonable for something spinning in a circle this wouldn’t exist.

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0 points

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?

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0 points

If this is truly something that doesn’t make sense to you, you may want to consider being tested for Autism if you have not already. This phrase is not something neurotypical people struggle with.

And I say that as someone who is not clinically autistic, but who is real fuckin’ close to it. No judgment, I’m not trying to make you feel bad or anything, it is just an observation.

I didn’t mean to unleash this torrent of comments on you, sorry.

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