• mindbleach@sh.itjust.works
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    23 days ago

    Linking a random textbook doesn’t prove anything

    Oh.

    Oh you’re actually illiterate.

    Nothing else would explain how you can’t figure out plain English text quoting the textbook and specifying the page number.

    In light of that disability, I can almost forgive the stupidity of insisting brackets aren’t just notation, when some notations don’t have brackets, period. RPN has a stack, which algebraic notation does not. Grocery-store calculators have neither.

    • Oh you’re actually illiterate

      No, I just don’t know which part of the book supposedly proves me wrong, and since you can’t tell me which part does so, I’ll take it that none of it does 🙄

      Nothing else would explain how you can’t figure out plain English text quoting the textbook

      Says person who thinks “means” means “identically equal” 🤣🤣🤣

      specifying the page number

      The link didn’t specify a page number. I already told you it opened up at the index. Your supposed link to 2 images only linked to one image also. you seem to have an issue with making links 🙄

      In light of that disability

      Your disability with making links that work?

      I can almost forgive the stupidity of insisting brackets aren’t just notation

      says the person actually insisting that they aren’t just notation 😂

      don’t have brackets, period

      As was the way in Maths for the many centuries preceding the use of brackets in Maths, such as 2+3x4=14 🙄

      RPN has a stack

      And each paired operation on the stack is treated as though in brackets and evaluated before anything else, as per the order of operations rules 🙄

      which algebraic notation does not

      Right, it has explicit brackets

      Grocery-store calculators have neither

      They have a stack

      • mindbleach@sh.itjust.works
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        23 days ago

        If I say it’s on page 27, do you understand which page I’m quoting, that specifically says you’re full of shit? Because I did, and you are.

        They have a stack

        They do not. Four-function calculators have an accumulator.

        RPN still does not have brackets. It hasn’t magically sprouted them since I had to introduce you to the concept, an entire year ago. Computers mostly reduce bracketed notation to RPN… not the other way around. There is no need for brackets of any sort, explicit or implicit, when using a stack and an accumulator. 2 2 3 + / doesn’t need anything “treated as though in brackets” unless you’re trying to explain it to a child who stubbornly insists there is only one way to do math and yes-huh there must be brackets somehow.

        • They do not

          says person who is unable to provide any evidence of such 🙄 guess what happens when you press the +/= followed by an x, it evaluates it and puts it on the stack 🙄

          Four-function calculators have an accumulator

          OMG. same same - it’s a one value stack 🤣🤣🤣

          RPN still does not have brackets

          In the foreground. They are still being added in the background

          It hasn’t magically sprouted them since I had to introduce you to the concept

          Which you didn’t, and they’ve always been there, just like the unwritten + sign in 3-2

          Computers mostly reduce bracketed notation to RPN

          No they don’t. They use the stack when parsing the expression, represented on paper with a binary tree

          2 2 3 + / doesn’t need anything “treated as though in brackets”

          Yes it does. It treats it as (2+3)/2 🙄

          unless you’re trying to explain it to a child who stubbornly insists there is only one way to do math

          So you’re admitting to being a child. That explains a lot 🤣🤣🤣

          yes-huh there must be brackets somehow

          Yep, now you’re getting it! 😂

          • mindbleach@sh.itjust.works
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            23 days ago

            It treats it as (2+3)/2

            It treats it as 2 2 3 + /. Push push push pop pop. There is no “background.” These are hardware functions.

            Do you think Spanish speakers secretly think in English? I don’t believe you understand there are multiple ways to do things. As if binary multiplication must be doing decimal multiplication “behind the scenes.”

            it’s a one value stack

            That’s not how a fucking stack works.

            • It treats it as 2 2 3 + /.

              Yep, it treats it as (2+3)/2, unless you’re saying it gets a different answer to that?? 🤣🤣🤣

              Push push push pop pop

              oh, look what came out of those first pops, 2+3, the part that is implicitly in brackets 😂

              There is no “background.”

              So you are saying it gets a different answer to (2+3)/2?? 🤣🤣🤣

              These are hardware functions

              And software controls what is happening with the hardware. pop is a software command to the hardware. I teach Computer Science as well 😂

              I don’t believe you understand there are multiple ways to do things

              says person who doesn’t understand that there is only one set of order of operations rules 🙄

              As if binary multiplication must be doing decimal multiplication “behind the scenes.”

              Other way around dude

              That’s not how a fucking stack works

              It is when you can only store one thing on it! 😂 I’ll take that as an admission you were wrong all along then

              • mindbleach@sh.itjust.works
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                23 days ago

                Did you know Russian has no indefinite articles? They’re not implicit. They’re just not there. It’s why stereotypical moose-and-squirrel impressions say things like “have nice day.”

                In exactly the same way, RPN doesn’t have implicit brackets, because it does not need brackets, period. It can equivalently express the operations of an algebraic equation which has brackets, but that doesn’t mean it has or uses or needs or implies those brackets. They’re just not there. Getting the right answer does not require secret translation to the one notation you understand.

                How would you treat someone who insists brackets don’t exist, because they’re only implicitly representing a stack? Like, you can write (2+3)/2, but that’s only doing 2 2 3 + /. Obviously brackets aren’t real.

                • because it does not need brackets, period

                  It does if you want to get the answer to (2+3)/2 and not 2+3/2

                  It can equivalently express the operations of an algebraic equation which has brackets

                  There you go. Glad you finally worked it out 😂

                  implies those brackets

                  says person who just said it does 🙄

                  They’re just not there

                  Just like the + is “not there” in 3-2 🙄

                  Getting the right answer does not require secret translation to the one notation you understand

                  No, it requires obeying the rules 🙄

                  • mindbleach@sh.itjust.works
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                    22 days ago

                    The answer to 2 2 3 + / does not involve brackets. Brackets aren’t real. Don’t you know all equations are secretly RPN, in the background? There’s only a stack, and the rules for a stack are that brackets do not work.