this post was submitted on 25 Oct 2025
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Better safe than sorry (lemmy.dbzer0.com)
submitted 3 weeks ago* (last edited 3 weeks ago) by Stamets@lemmy.dbzer0.com to c/science_memes@mander.xyz
 
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[–] jeansburger@piefed.world 40 points 3 weeks ago (5 children)

Okay look, some of the math I do on a daily basis is like 5 levels above basic addition (it looks like I've written a whole ass sentences of gibberish) but like what if they changed it? I'd rather be sure that 2+2 still equals 4 than be wrong and the thing I'm working on ends up making expensive sounds.

There's also just removing the cognitive load of having to process this information. You're allowed to look up the answer (that's what a calculator and the slide rule do).

Using the tools you have to speed up your work doesn't make you a worse engineer than those in the past. You're building off their work so you don't have to constantly literally reinvent the wheel.

[–] Aqarius@lemmy.world 22 points 3 weeks ago

Yup. If I'm not ballparking, all math goes through a calculator. It's already there, and I'm already using it. "Trust, but verify".

[–] arox@lemmy.frozeninferno.xyz 5 points 3 weeks ago (1 children)

I am guessing you are an engineer of some sort.

[–] FelixCress@lemmy.world 3 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Engineer of wide surfaces - also known as a cleaner.

I'm a Cognitive Developmental Transportation Engineer ... aka school bus driver.

[–] Zerush@lemmy.ml 4 points 3 weeks ago (4 children)

You can't calculate 2+2 with a slide rule

[–] johncritzman@lemmy.world 8 points 3 weeks ago* (last edited 3 weeks ago) (2 children)

Moves C index to 2 on the D scale

Moves indicating line to 2 on the C scale

Reads 4 on the D scale

Good thing 2+2 and 2*2 yield the same answer. Would have to bust out the addiator otherwise

[–] MeThisGuy@feddit.nl 3 points 3 weeks ago (1 children)
[–] Zerush@lemmy.ml 1 points 3 weeks ago* (last edited 3 weeks ago)

Yoy can use 2 normal rules to add/rest 2 numbers, but you can't do it in a slide rule with its logarithm scales. But luckily there are solutions out there

[–] Zerush@lemmy.ml 1 points 3 weeks ago (1 children)

Well, but fails with 3+3, there an US engineer must use still an addiator. Nowadays it's easier with an pocket calculator.

[–] johncritzman@lemmy.world 1 points 3 weeks ago (1 children)

But a pocket calculator doesn't get you nearly enough street cred these days

[–] Zerush@lemmy.ml 1 points 3 weeks ago (1 children)

Well, even an iPhone has an calculator by default (maybe with an monthly fe)

[–] johncritzman@lemmy.world 2 points 3 weeks ago (1 children)

But when I'm at the club with my friends and I pull out the Pickett model N600-ES speed rule to calculate the tip, all the eyes are on me

[–] Zerush@lemmy.ml 1 points 3 weeks ago

In my studies I used a doble side rule, the Faber-Castell 2/83 N Novo-Duplex, 31 scales, not so practical for the pocket (>38cm)

[–] SpaceNoodle@lemmy.world 8 points 3 weeks ago

Maybe you can't

[–] brown567@sh.itjust.works 5 points 3 weeks ago (1 children)

You could probably do log_10(10²×10²) instead?

[–] Zerush@lemmy.ml 1 points 3 weeks ago (1 children)
[–] I_am_10_squirrels@beehaw.org 1 points 3 weeks ago (1 children)
[–] Zerush@lemmy.ml 1 points 3 weeks ago (1 children)
[–] I_am_10_squirrels@beehaw.org 1 points 2 weeks ago

Sorry, that's too complicated for me

[–] redchert@lemmygrad.ml 2 points 3 weeks ago

Technology is invented for the sake of usage. It’s cultural calvinism that postulates that the „harder“ work is the „better“ work.

[–] hansolo@lemmy.today 1 points 3 weeks ago (3 children)

The issue is that the floor on confidence in knowledge is now basically nothing.

Why is it that 8th graders in 1990 could do solid algebra and polynomials on paper and not need help? Nothing about the math has changed.

Slide rules do not do basic math, that's a poor comparison. People that did higher math on slide rules only used it for part of the problem dealing with logarithms, and that was a shorthand for larger approximation tables in books. That's necessary help. Solving for 2+2 is not. That's for little children that count on their fingers. If you're not in the "WTF?" camp, you're part of the problem.

[–] stray@pawb.social 4 points 3 weeks ago (1 children)

Difficulty performing mental arithmetic doesn't necessarily correlate with poor overall intelligence or inability to grasp higher math concepts. In a world where we all have calculators in our pockets, there is no reason to bar someone from studies or a career involving higher mathematics simply for being neurologically atypical, nor to shame them for whichever coping strategies allow them to perform.

[–] hansolo@lemmy.today 0 points 3 weeks ago

That's not what I'm saying. I'm saying that the most basic of math should be as basic as reading. Something that anyone can do themselves.

Do you honestly think that for the rest of your life every moment will let a calculator or ChatGPT help you have every interaction you have? People are perfectly capable of basic math.

[–] derek@infosec.pub 2 points 3 weeks ago (1 children)

I'm not confident you're participating in good faith here but, on the off-chance you are; I'm not sure I take your point.

Can you substantiate your initial claim? "The floor on confidence in knowledge is now basically nothing" seems too broad a statement to meaningfully defend.

Even if we assume you're talking about US 8th graders you'll have to be more specific. The US has seen degraded academic performance across the board but the degree varies by State (and often again by County).

What's "necessary help" is up for debate as well. There's a hint of something I can agree with here though. I do agree that, for certain vocations, it's important for individuals to have firm graps on the fundamentals. Programmers ought to be able to code without IDEs and Mathematicians work problems without calculators. I don't agree that the common use of good tools by those professionals results in the brain-drain bogeyman you seem to be shadow boxing.

What am I meant to be alarmed about, exactly?

[–] hansolo@lemmy.today 3 points 3 weeks ago* (last edited 3 weeks ago)

No, I'm here in good faith.

Being alarmed, I suppose, would be the subjective assessment that this isn't too far off from all the cognitive decline correlated to excessive use of AI. It's an extrapolation, sure, but similar.

It's lovely to think that a phone will always be right on us all, for the rest of our lives. IRL, shit happens. Sometimes people just dug a calf out of a pond, their phone got soaked, and they still need to divide 250 lbs of fertilizer by 10 barrels and not be seized by indecision because there's not a cell phone around.

[–] FelixCress@lemmy.world 2 points 3 weeks ago* (last edited 3 weeks ago)

Slide rules do not do basic math, that's a poor comparison

He doesn't know that. None of the idiots advocating regressive imbecilism actually understand what they are talking about.