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  3. People Believe If 90% Prefer A over B, A Must Be Much Better than B. Are They Wrong?

People Believe If 90% Prefer A over B, A Must Be Much Better than B. Are They Wrong?

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  • B brotherl0v3@lemmy.world

    Holy shit, I am totally guilty of this.

    For those who haven’t yet read the article, the idea is that people interpret “80% of people prefer Pepsi Max to Coke” as “Pepsi Max is 80% yummier than Coke”, when in reality most of that 80% only slightly prefers Pepsi.

    Basically a strong difference in proportion of people who prefer one option to another does not necessarily imply a strong difference in the average opinion between the two.

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    Ech
    wrote on last edited by ech@lemmy.ca
    #10

    Same thing with RottenTomatoes ratings. A fresh rating just means the reviewer thought it wasn’t terrible, and the “freshness” rating really doesn’t say anything about the actual quality of the movie.

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      🇨🇦 tunetardis
      wrote on last edited by
      #11

      I can’t remember which comedian it was, but he said whenever he hears something like 4 out of 5 doctors recommend a particular medication, he wonders what that 5th doctor knows that the others don’t?

      zizzy@lemmy.blahaj.zoneZ D swedneck@discuss.tchncs.deS 3 Replies Last reply
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        Tar_Alcaran
        wrote on last edited by
        #12

        We haven’t yet found a case where believing something literally makes it true, contrary to what religion and politics would have you think, so the answer is a resolute “can’t say”

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          Øπ3ŕO This user is from outside of this forum
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          Øπ3ŕ
          wrote on last edited by
          #13

          “People are dumb, panicky, dangerous animals, and you know this.” - Agent K

          T swedneck@discuss.tchncs.deS 2 Replies Last reply
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          • A anomie

            They must be running from some imminent danger in such a scenario, so perhaps I would.

            slacktoid@lemmy.mlS This user is from outside of this forum
            slacktoid@lemmy.mlS This user is from outside of this forum
            slacktoid@lemmy.ml
            wrote on last edited by
            #14

            Maybe… But no not in this scenario.

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            • Øπ3ŕO Øπ3ŕ

              “People are dumb, panicky, dangerous animals, and you know this.” - Agent K

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              tempermentalanomaly@lemmy.world
              wrote on last edited by
              #15

              “Hey I’m people! Ahhhhhhh!.. I’ll kill you dead!” - Homer Simpson?

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                andrew0A This user is from outside of this forum
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                andrew0
                wrote on last edited by
                #16

                This is true only if the decisions were made independently. If you allow people to make a decision after they’ve seen the metrics, this no longer holds.

                Here’s an example of the first. You go at a farmer’s market with a cow and you ask everyone to write on a piece of paper what they think the weight is. If you get the replies and average them, you will find that the mean of all answers will be quite close to the real answer. A mix of non-experts and experts will iron out a good answer somehow.

                Now take the average experience of going to a restaurant. One might have just opened recently, has great food and great staff, but only 5 reviews, at an average of 3.8 or something. Another restaurant nearby has been open for 3-4 years, and has 1000 reviews, at maybe 3.9. People will usually follow the one with more reviews because they think it’s the safer option due to the information available. However, if you were to hide this and ask them to choose by just looking at the venue and the menu, they would probably choose the first one.

                Group dynamics are quite interesting, and the psychology behind this is quite funky sometimes 😄

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                • T 🇨🇦 tunetardis

                  I can’t remember which comedian it was, but he said whenever he hears something like 4 out of 5 doctors recommend a particular medication, he wonders what that 5th doctor knows that the others don’t?

                  zizzy@lemmy.blahaj.zoneZ This user is from outside of this forum
                  zizzy@lemmy.blahaj.zoneZ This user is from outside of this forum
                  zizzy@lemmy.blahaj.zone
                  wrote on last edited by
                  #17

                  The fifth doctor got bribed by a different brand first

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                    bestbouclettes@jlai.lu
                    wrote on last edited by
                    #18

                    Isn’t that the tyranny of the majority? The fact that a larger percentage of the population does something, doesn’t necessarily mean it’s the better thing.

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                    • B bestbouclettes@jlai.lu

                      Isn’t that the tyranny of the majority? The fact that a larger percentage of the population does something, doesn’t necessarily mean it’s the better thing.

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                      wrote on last edited by
                      #19

                      Eg. USA.

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                      • T Tar_Alcaran

                        We haven’t yet found a case where believing something literally makes it true, contrary to what religion and politics would have you think, so the answer is a resolute “can’t say”

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                        wrote on last edited by davidagain@lemmy.world
                        #20

                        Yes and no. Beliefs can definitely shape reality.

                        If someone believes that they can’t do something difficult, they often don’t attempt it, so don’t acquire the skills they would need, and stay unable to do it. The converse is also true.

                        Children are heavily influenced by their parents’ beliefs about them.

                        Believing something about different brands of soda doesn’t change the chemical composition of them, but in a world where products are judged on their sales rather than their chemical composition, changing the perception of a product can fundamentally change its sales, making it a better product by the only objective measure that’s consistently used. This is even more true in the world of fashion, for example very strongly with trainers etc.

                        Anything where human behaviour changes reality is a place where beliefs change reality.

                        Our beliefs shape the world strongly and powerfully. They change reality.

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                        • T 🇨🇦 tunetardis

                          I can’t remember which comedian it was, but he said whenever he hears something like 4 out of 5 doctors recommend a particular medication, he wonders what that 5th doctor knows that the others don’t?

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                          wrote on last edited by
                          #21

                          The fifth Doctor knows who the Portreeve of Castrovalva really is.

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                          • Øπ3ŕO Øπ3ŕ

                            “People are dumb, panicky, dangerous animals, and you know this.” - Agent K

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                            swedneck@discuss.tchncs.deS This user is from outside of this forum
                            swedneck@discuss.tchncs.de
                            wrote on last edited by
                            #22

                            feels a bit strange to not include the full quote, which changes the sentiment quite a bit:
                            “A person is smart. People are dumb, panicky dangerous animals and you know it.”

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                            • B brotherl0v3@lemmy.world

                              Holy shit, I am totally guilty of this.

                              For those who haven’t yet read the article, the idea is that people interpret “80% of people prefer Pepsi Max to Coke” as “Pepsi Max is 80% yummier than Coke”, when in reality most of that 80% only slightly prefers Pepsi.

                              Basically a strong difference in proportion of people who prefer one option to another does not necessarily imply a strong difference in the average opinion between the two.

                              swedneck@discuss.tchncs.deS This user is from outside of this forum
                              swedneck@discuss.tchncs.deS This user is from outside of this forum
                              swedneck@discuss.tchncs.de
                              wrote on last edited by
                              #23

                              i mean it’s also important to note that companies can blatantly lie

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                              • T 🇨🇦 tunetardis

                                I can’t remember which comedian it was, but he said whenever he hears something like 4 out of 5 doctors recommend a particular medication, he wonders what that 5th doctor knows that the others don’t?

                                swedneck@discuss.tchncs.deS This user is from outside of this forum
                                swedneck@discuss.tchncs.deS This user is from outside of this forum
                                swedneck@discuss.tchncs.de
                                wrote on last edited by
                                #24

                                4 out of 5 dentists recommend using toothpaste and couldn’t possibly give less of a fuck which brand you use, the fifth dentist was on vacation

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                                • A anomie

                                  They must be running from some imminent danger in such a scenario, so perhaps I would.

                                  swedneck@discuss.tchncs.deS This user is from outside of this forum
                                  swedneck@discuss.tchncs.deS This user is from outside of this forum
                                  swedneck@discuss.tchncs.de
                                  wrote on last edited by
                                  #25

                                  good old “if you see an engineer running, you should probably follow them”

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                                    honytawk@feddit.nl
                                    wrote on last edited by honytawk@feddit.nl
                                    #26

                                    I mean, better is subjective. You can’t quantify that.

                                    If 90% of people like something over something else, that is all that it means. For all those people it is better for them. But for 10% it isn’t better, let alone much better.

                                    This is more a philosophical question than a science one.

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                                    • swedneck@discuss.tchncs.deS swedneck@discuss.tchncs.de

                                      good old “if you see an engineer running, you should probably follow them”

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                                      honytawk@feddit.nl
                                      wrote on last edited by
                                      #27

                                      Same with bomb disposal units and nuclear scientists.

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                                      • D Log in | Sign up

                                        Eg. USA.

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                                        bestbouclettes@jlai.lu
                                        wrote on last edited by
                                        #28

                                        Eg. Pretty much every group of people in the history of humanity. We tend to forget that we’re just dumb animals with dumb animal instinct sometimes.

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                                        • swedneck@discuss.tchncs.deS swedneck@discuss.tchncs.de

                                          feels a bit strange to not include the full quote, which changes the sentiment quite a bit:
                                          “A person is smart. People are dumb, panicky dangerous animals and you know it.”

                                          Øπ3ŕO This user is from outside of this forum
                                          Øπ3ŕO This user is from outside of this forum
                                          Øπ3ŕ
                                          wrote on last edited by
                                          #29

                                          Considering the post is about people, and the “person” in the quote can be assumed to represent the reader of said “statistic”, the quote functions as provided.

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