Comment on I dunno

SSUPII@sopuli.xyz ⁨2⁩ ⁨weeks⁩ ago

• NewDark@lemmings.world ⁨2⁩ ⁨weeks⁩ ago

  Exactly

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  • sem@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

    So it’s just an unfunny meme?

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    • Klear@quokk.au ⁨1⁩ ⁨day⁩ ago

      It’s engagement bait.

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    • NewDark@lemmings.world ⁨2⁩ ⁨weeks⁩ ago

      I think it’s meant to play with your expectations. Normally someone’s take being posted is to show them being confidently stupid, otherwise it isn’t as interesting and doesn’t go viral.However, because we’re primed to view it from that lens, we feel crazy to think we’re doing the math correctly and getting the “wrong answer” from what we assume is the “confident dipshit”.

      There’s layers beyond the superficial.

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      • namingthingsiseasy@programming.dev ⁨2⁩ ⁨weeks⁩ ago

        I fell for it. It’s crazy to think how heavily I’ve been trained to believe everything I see is wrong in the most embarrassing and laughable way possible. That’s pretty depressing if you think about it.

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    • ExtremeDullard@piefed.social ⁨2⁩ ⁨weeks⁩ ago

      As most memes are.

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    • Ghyste@sh.itjust.works ⁨2⁩ ⁨weeks⁩ ago

      Not even a meme.

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    • 0x0@lemmy.zip ⁨2⁩ ⁨weeks⁩ ago

      More like a sad realization of the state of (un)education in some parts of the so-called civilized world.
      You laugh not to cry.

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• marcos@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  Some people insist there’s no “correct” order for the basic arithmetic operations. And worse, some people insist the correct order is parenthesis first, then left to right.

  Both of those sets of people are wrong.

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  • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

    Some people insist there’s no “correct” order for the basic arithmetic operations.

    And those people are wrong

    And worse, some people insist the correct order is parenthesis first, then left to right

    As per Maths textbooks

    Both of those sets of people are wrong

    All Maths textbooks are wrong?? 😂

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  • MotoAsh@piefed.social ⁨2⁩ ⁨weeks⁩ ago

    Hopefully you can see where their confusion might come from, though. PEMDAS is more P-E-MD-AS. If you have a bunch of unparenthesized addition and subtraction, left to right is correct. A lot of like, firstgrader math problems are just basic problems that are usually left to right (but should have some extras to highlight PEMDAS somewhere I’d hope).

    So they’re mostly telling you they only remember as much math as a small child that flunked.

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    • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

      addition and subtraction, left to right is correct

      You can do addition and subtraction in any order and it’s still correct

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    • SpaceCadet@feddit.nl ⁨2⁩ ⁨weeks⁩ ago

      If you have a bunch of unparenthesized addition and subtraction, left to right is correct

      If you have a bunch of unparenthesized addition and subtraction, left to right doesn’t matter.

      1 + 2 - 3 = 1 - 3 + 2 = -3 + 2 + 1

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      • MotoAsh@piefed.social ⁨2⁩ ⁨weeks⁩ ago

        True, but as with many things, something has to be the rule for processing it. For many teachers as I’ve heard, order of appearance is ‘the rule’ when commutative properties apply. … at least until algebra demands simplification, but that’s a different topic.

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      • kuberoot@discuss.tchncs.de ⁨2⁩ ⁨weeks⁩ ago

        If you have a bunch of unparenthesized addition and subtraction, left to right doesn’t matter.

        Right, because 1-2-3=3-2-1.

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    • Feathercrown@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      PE(MD)(AS)

      Now just remember to account for those parentheses first…

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      • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

        PE(MD)(AS) Now just remember to account for those parentheses first

        Those Brackets don’t matter. I don’t know why people insist it does

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    • orbitz@lemmy.ca ⁨2⁩ ⁨weeks⁩ ago

      Huh I just remembered the orders of arithmetic but parentheses trump all so do them first (I use them in even the calculator app). Mean I assume that’s that that says but never learned that acronym is all. Now figuring out categories of words;really does my noodle in sometimes. Cause some words can be either depending on context. Math when it’s written out has (mostly) the same answer. I say mostly because somewhere in the back of my brain there are some scenarios where something more complicated than straight arithmetic can come out oddly but written as such should come out the same.

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  • Petter1@discuss.tchncs.de ⁨2⁩ ⁨weeks⁩ ago

    Well, this is just a writing standard that is globally agreed on,

    The writing rules are defined by humans not by natural force
    (That one thing and another thing are two things, is a rule from nature, as comparison)

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    • mindbleach@sh.itjust.works ⁨3⁩ ⁨days⁩ ago

      Save yourself the trouble - Smartman Apps is a crank. They categorically will not comprehend the difference between the notation we made up and how numbers work. Dingus keeps saying ‘animals can count’ like that proves parentheses-first is completely different! from distribution.

      Why’d Russel and Whitehead bother with the Principia Mathematica when they could just point to Clever Hans?

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    • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

      this is just a writing standard that is globally agreed on

      No, it’s a universal rule of Maths

      The writing rules are defined by humans not by natural force

      Maths is for describing natural forces, and is subject to those laws

      That one thing and another thing are two things, is a rule from nature

      Yep, there are even some animals who understand that, and all of Maths is based upon it.

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  • SkyeStarfall@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

    I mean, arithmetic order is just convention, not a mathematical truth. But that convention works in the way we know, yes, because that’s what’s… well… convention

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    • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

      I mean, arithmetic order is just convention

      Nope, rules arising from the definition of the operators in the first place.

      not a mathematical truth

      It most certainly is a mathematical truth!

      But that convention works in the way we know, yes, because that’s what’s… well… convention

      The mnemonics are conventions, the rules are rules

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      • SkyeStarfall@lemmy.blahaj.zone ⁨3⁩ ⁨days⁩ ago

        The rules are socially agreed upon. They are not a mathematical truth. There is nothing about the order of multiple different operators in the definition of the operators themselves. An operator is simply just a function or mapping, and you can order those however you like. All that matters is just what calculation it is that you’re after

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    • marcos@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      Social conventions are real, well defined things. Some mathematicians like to pretend they aren’t, while using a truckload of them; that’s a hypocritical opinion.

      That’s not to say you can’t change them. But all of basic arithmetic is a social convention, you can redefine the numbers and operations any time you want too.

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      • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

        Social conventions are real, well defined things

        So are the laws of nature, that Maths arises from

        Some mathematicians like to pretend they aren’t, while using a truckload of them; that’s a hypocritical opinion

        No, you making false accusations against Mathematicians is a strawman

        That’s not to say you can’t change them

        You can change the conventions, you cannot change the rules

        But all of basic arithmetic is a social convention

        Nope, law of nature. Even several animals know how to count.

        you can redefine the numbers and operations any time you want too

        And you end up back where you started, since you can’t change the laws of nature

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• pixeltree@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

  [deleted]

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  • SSUPII@sopuli.xyz ⁨2⁩ ⁨weeks⁩ ago

    Yeah I know that. But I was feeling confused as to why it was here. That’s why I was feeling trolled, because it made me doubt basic math for being posted in a memes community.

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    • JackbyDev@programming.dev ⁨2⁩ ⁨weeks⁩ ago

      They did the joke wrong. To do it right you need to use the ÷ symbol. Because people never use that after they learn fraction, people treat things like a + b ÷ c + d as

      a + b
      -----
      c + d
      

      Or (a + b) ÷ (c + d) when they should be treating it as a + (b ÷ c) + d.

      That’s the most common one of these “troll.math” tricks. Because notating as

      a + b + d
          -
          c
      

      Is much more common and useful. Do people get used to grouping everything around the division operator as if they’re in parentheses.

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      • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

        Because people never use that after they learn fractions,

        Yes they do, because not every division is a fraction

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      • CannonFodder@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

        Or
        12 / 2(6) And trying to argue this is 36.

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      • sukhmel@programming.dev ⁨2⁩ ⁨weeks⁩ ago

        Treat a + b/c + d as a + b/(c + d) I can almost understand, I was guilty of doing that in school with multiplication, but auto-parenthesising the first part is really crazy take, imo

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    • Zephorah@discuss.online ⁨2⁩ ⁨weeks⁩ ago

      Alternatively, the poster calculated the wrong answer, thus assuming this guy was wrong.

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    • Ghyste@sh.itjust.works ⁨2⁩ ⁨weeks⁩ ago

      Because OP posts garbage to all the meme communities.

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      • DragonTypeWyvern@midwest.social ⁨2⁩ ⁨weeks⁩ ago

        This shit take got deleted right in front of my eyes

        The system works

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      • SSUPII@sopuli.xyz ⁨2⁩ ⁨weeks⁩ ago

        Oh so just like me on !lemmyshitpost@lemmy.world

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    • pixeltree@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

      Gotcha gotcha, sorry

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• RizzRustbolt@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  There is no answer. Because there is no question.

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  • SmartmanApps@programming.dev ⁨3⁩ ⁨days⁩ ago

    Because there is no question

    So Maths test says “2+3 ____”, and you write “that’s not a question” on the blank line?? 😂

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  • imetators@lemmy.dbzer0.com ⁨2⁩ ⁨weeks⁩ ago

    That is a problem, tho

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    • polydactyl@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      I know the solution

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