this post was submitted on 15 Nov 2024
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Science Memes

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[Thread] Mental Math (mander.xyz)
submitted 20 hours ago by [email protected] to c/[email protected]
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[–] [email protected] 147 points 19 hours ago* (last edited 19 hours ago) (4 children)

Another one is levelling.

A lot of people can see a picture frame is about 0.5° out of level and their fucking eye twitches until they fix it

Me included

That's nuts when you think about it

[–] [email protected] 4 points 2 hours ago (1 children)

I remember we once installed something on a beam 40' feet up. While waking through an inspection of many such things, the engineer stops, cocks his head for a second, and says "that's not quite straight"

And then it wasn't. Like a cast of manual breathing, the thing I had been frequently walking past for weeks was suddenly wrong, ever so slightly

[–] [email protected] 3 points 2 hours ago (1 children)

Leave it up to a civil engineer to ruin your day.

[–] [email protected] 1 points 18 minutes ago

Nah, we just went up and fixed it. I think I did it while the guy on the ground eyeballed it... It's weird how it's impossible to see up close, but from 40 feet away humans can tell to a fraction of a percent, I was tapping it with a wrench to dial it in based on the intensity of hand gestures. Honestly, we were more impressed by how he spotted it at a glance, it's not like we did shoddy work - it was barely not tongue click, as he put it

It helped that I liked the engineer. Always cheerful and he gave me mini multi tool pliers for my birthday. Totally unexpected and not expensive, but I've got them right next to me right now, I still use them years later. And he was like that to everyone - he was a stickler for the details, but actually took an interest in us as people

Just a good guy all around. It's hard to be upset with someone like that, even when they make you redo work now and then

[–] Eranziel 14 points 12 hours ago

I worked on an industrial robot once, and we parked it such that the middle section of the arm was up above the robot and supposed to be level. I could tell from 50 feet away and a glance that it wasn't, so we checked. It was off by literally 1 degree.

Degrees are bigger than we think, but also our eyes are incredible instruments.

[–] [email protected] 56 points 16 hours ago (2 children)

See, I live in an old apartment. The corners aren't 90°, the wall a picture is hanging on is convex. When I'm lying in bed and look at the picture it looks like it's crooked but I used a level several times on it and it's as straight as can be. It's driving me insane.

[–] Anticorp 21 points 12 hours ago (1 children)

This is when you set it relative to the rest of the unleveled stuff in your view to make it look level.

[–] [email protected] 1 points 2 hours ago

The tiles in my kitchen were installed slightly rotated so I had to do that with all my shelves

[–] Hawke 30 points 15 hours ago

But “level isn’t what you need. If the floor and ceiling aren’t level, it’ll look wrong.

[–] [email protected] 63 points 17 hours ago (4 children)

I purposefully slightly tilt most my wall hangings. I like watching guests squirm when they mention it and I do nothing

[–] [email protected] 24 points 14 hours ago (1 children)

I respect and hate this. I could never

[–] [email protected] 4 points 14 hours ago

That's a game that would be hilarious. But yeah, i wouldn't be able to do it.

[–] [email protected] 35 points 17 hours ago

Sorry cousin, unfortunately I will get the flu this Christmas and won't be able to come visit.

[–] [email protected] 19 points 16 hours ago

Madlad

[–] Anticorp 5 points 12 hours ago

We would probably fist fight then, because I'd level it without saying anything, and if you set it back crooked, I would throw it on the ground.