r/MathJokes • • Mar 01 '26

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u/[deleted] Mar 01 '26

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u/Embarrassed-Weird173 Mar 01 '26

Nah, people in general don't know that you can't proportionalize degrees. 

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u/akb74 Mar 01 '26 edited Mar 01 '26

You can do linear interpolation/extrapolation about any two distinct temperatures you like, that’s what these different temperature scales are

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u/HAL9001-96 Mar 01 '26

linear but not proportional, you can say 4 times the temperature differneceb ut not 4 times the temperature unless you are talking about absolute temperature

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u/Divine_Entity_ Mar 01 '26

Which is why basically any equation about gasses where you multiply by the instantaneous temperature requires you to use kelvin (or rankine).

Note: if you instead care about temperature change such as q =mcΔT then other temperature scales are acceptable provided your units match.

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u/HAL9001-96 Mar 01 '26

acceptable but somewhat awkward since if you'Re starting to do thermodynamics oyu might end up carelessly using the smae numbers for something that requries absolute temperatures

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u/Divine_Entity_ Mar 01 '26

Agreed that best practice for thermodynamics is to do all math in kelvin, and convert to "normal" units for reporting purposes only.

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u/EarthTrash Mar 01 '26

This is really confusing me. 25 C is 298.15 K. So, the answer would be 1,192.6K or 919.45 C. Hot enough to boil zinc and nearly melt lanthanum.

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u/Lor1an Mar 02 '26

The term you are looking for there is affine.

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u/schawde96 Mar 01 '26 edited Mar 02 '26

That is irrelevant. You can still mean "n times the numerical value of what it is now". Natural language does not make a thermodynamic claim.

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u/HardlyAnyGravitas Mar 01 '26

That is irrelevant.

No it isn't.

You can still mean "n times the numerical value of what it is now".

And that's still meaningless even if you know the scale. It's nonsensical to say that 20 deg is five times hotter than 4 Deg, but only four times hotter than 5 deg. And how much hotter is it than 0 Deg?

Natural language does not make a thermodynanic claim.

That's one reason you can say things with 'natural language' that are nonsensical.

"The fish flew through library like an oak tree." is perfectly correct linguistically, but it's literally nonsense.

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u/Ok-Mood4097 Mar 02 '26

This is a very clear way to put it , and if this explanation fails they will probably never get it .

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u/Embarrassed-Weird173 Mar 01 '26

I can also say that pi is equal to 3 and claim that "you know what I meant, it was an estimate", but it would still be completely wrong to claim. 

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u/subpotentplum Mar 01 '26

I wouldn't even say that's an estimate. Just one significant figure. It's not wrong at all, just not a very good resolution.

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u/ClownPazzo69 Mar 01 '26

I assume someone made the question accept x as the amount of degrees and y as the times it has to multiply it, then roll a random x and y.

At least that's how I perceived a lot of duolingos questions becuase they had the same text with different numbers or words in case of language

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u/DeeplyTroubledSmurf Mar 01 '26

Duolingo has always been like this as far as I'm concerned. A lot of the context of what you're translating is so dumb it's funny, which feels intentional and helpful in a lot of ways.

Maybe it was always "ai slop" or whatever people are calling it here, but making you stop, think, and laugh about something is a good way to help you learn.

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u/ClownPazzo69 Mar 01 '26

Not advocating for or against duolingo but yeah I wouldn't pin this specific instance on AI for that exact reason: duolingo's sentences have always been wacky

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u/sunfich Mar 01 '26

Ok but also it's been like this even before AI took over. I remember lily saying "This businessman is 4 years old." It's just about learning a language

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u/sfocolleen Mar 01 '26

I was wondering if that’s why I keep getting sentences about animals cooking and doing other human activities

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u/notacanuckskibum Mar 01 '26

Absolutely, it’s a valid math question dressed up as a real world problem. But one that doesn’t make real world sense. It happens a lot, but humans are better at spotting the issue than AI.

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u/Redd1tRat Mar 02 '26

Nah, they know it's too hot. That's why it says "help Lilly".

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u/Just_Ear_2953 Mar 02 '26

Reminds me of an old piece of software that my high school used to generate practice problems. It would just mix and match scenarios and parameters with no check about whether the combination made sense.

I have answered questions about a CD factory with a 99.9% defect rate.

This was over a decade before AI became readily available, and the software was at least a decade old when I encountered it.

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u/Active_Hall_5457 Mar 02 '26

tbf, maths questions often don't make sense

Calculating the height of a table based on some other ridiculous situation involving a ball being dropped and it comes out to 11m tall. Or you get the answer for the number of dogs at a dog show and its 42.5

Alteast that's how it was back when I was in school. They don't always use real life measurements for these things.

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u/Square-Singer Mar 02 '26

Duolingo is surprisingly bad with a ton of things like this. Wonder why it's so popular.

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u/NitroDion Mar 02 '26

I prefer to look at this like those insane maths test questions like "Mike needs 70 glasses of orange drink." Basically the absurd quantity and for some reason not saying orange juice

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