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  3. Distorted sound of the early universe suggests we are living in a giant void

Distorted sound of the early universe suggests we are living in a giant void

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    Pro
    wrote last edited by
    #1
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    The CuuuuubeC R FundMECFSF coolkat@slrpnk.netC D 8 Replies Last reply
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      The CuuuuubeC This user is from outside of this forum
      The CuuuuubeC This user is from outside of this forum
      The Cuuuuube
      wrote last edited by
      #2

      we’re under quarantine. we are crikket. the rest of the galactic community saw what were up to and is putting us in the isolation void until they observe that we can act right

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        reallykindasorta@slrpnk.net
        wrote last edited by
        #3

        The data and rationale seem quite compelling!

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          FundMECFSF This user is from outside of this forum
          FundMECFSF This user is from outside of this forum
          FundMECFS
          wrote last edited by
          #4

          In fact, it appears we live in a giant cosmic void with roughly 20% lower than the average density of matter.

          Okay that’s a little less dramatic than I envisioned given the use of the word “void”

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          • The CuuuuubeC The Cuuuuube

            we’re under quarantine. we are crikket. the rest of the galactic community saw what were up to and is putting us in the isolation void until they observe that we can act right

            teftT This user is from outside of this forum
            teftT This user is from outside of this forum
            teft
            wrote last edited by
            #5

            The rest of the galactic population is in the void with us. It’s the rest of the universe outside the local void that has quarantined us.

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              coolkat@slrpnk.netC This user is from outside of this forum
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              coolkat@slrpnk.net
              wrote last edited by
              #6

              No dark forest yaaaay

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                drspod@lemmy.ml
                wrote last edited by
                #7

                Our region is dark low-energy and dark doesn’t matter.

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                • coolkat@slrpnk.netC coolkat@slrpnk.net

                  No dark forest yaaaay

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                  eleitl@lemmy.zip
                  wrote last edited by eleitl@lemmy.zip
                  #8

                  Dark Forest is not self consistent. Ability to travel implies nanotechnology which allows metabolizing any resource which deterministically leads to expansion which leads to self-selection for fastest expanders which soon means relativistic expansion which is hard to observe since observation window is short while pre-expansive observers are extinguished. Alernative is that nucleation density is very low and/or (reaching the stage of) travel and expansion is impossible. This is consistent with what we see, so Occam’s razor cuts Dark Forest.

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                  • E eleitl@lemmy.zip

                    Dark Forest is not self consistent. Ability to travel implies nanotechnology which allows metabolizing any resource which deterministically leads to expansion which leads to self-selection for fastest expanders which soon means relativistic expansion which is hard to observe since observation window is short while pre-expansive observers are extinguished. Alernative is that nucleation density is very low and/or (reaching the stage of) travel and expansion is impossible. This is consistent with what we see, so Occam’s razor cuts Dark Forest.

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                    acockworkorange@mander.xyz
                    wrote last edited by
                    #9

                    Those are definitely words.

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                    • E eleitl@lemmy.zip

                      Dark Forest is not self consistent. Ability to travel implies nanotechnology which allows metabolizing any resource which deterministically leads to expansion which leads to self-selection for fastest expanders which soon means relativistic expansion which is hard to observe since observation window is short while pre-expansive observers are extinguished. Alernative is that nucleation density is very low and/or (reaching the stage of) travel and expansion is impossible. This is consistent with what we see, so Occam’s razor cuts Dark Forest.

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                      mic_check_one_two@lemmy.dbzer0.com
                      wrote last edited by
                      #10

                      This reads like a manifesto.

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                      • E eleitl@lemmy.zip

                        Dark Forest is not self consistent. Ability to travel implies nanotechnology which allows metabolizing any resource which deterministically leads to expansion which leads to self-selection for fastest expanders which soon means relativistic expansion which is hard to observe since observation window is short while pre-expansive observers are extinguished. Alernative is that nucleation density is very low and/or (reaching the stage of) travel and expansion is impossible. This is consistent with what we see, so Occam’s razor cuts Dark Forest.

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                        tauzero@mander.xyz
                        wrote last edited by
                        #11

                        Robin Hanson is in the house!

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                          bemorecareful@lemmy.world
                          wrote last edited by
                          #12

                          That lines up with my existential dread.

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                          • E eleitl@lemmy.zip

                            Dark Forest is not self consistent. Ability to travel implies nanotechnology which allows metabolizing any resource which deterministically leads to expansion which leads to self-selection for fastest expanders which soon means relativistic expansion which is hard to observe since observation window is short while pre-expansive observers are extinguished. Alernative is that nucleation density is very low and/or (reaching the stage of) travel and expansion is impossible. This is consistent with what we see, so Occam’s razor cuts Dark Forest.

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                            canadaplus@lemmy.sdf.org
                            wrote last edited by
                            #13

                            Ability to travel implies nanotechnology which allows metabolizing any resource which deterministically leads to expansion

                            Both of those aren’t really supported. Maybe all matter will be useful, or maybe rare elements will still be preferred, and what exactly nanotechnology will look like is up in the air (it could be that life has explored the space of possible nanomechanisms pretty well already). Similarly, it’s totally plausible an advanced species could stay in place. I actually worry we won’t have the attention span to fund slow interstellar expansion.

                            I’d agree there isn’t really a rational reason to cross interstellar space just to be a dick. Irrational reasons are possible, but seem unlikely. The only way dark forest makes sense is if competition is an issue, and the nature of space warfare leaves a strong pressure to strike early.

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                            • coolkat@slrpnk.netC coolkat@slrpnk.net

                              No dark forest yaaaay

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                              canadaplus@lemmy.sdf.org
                              wrote last edited by
                              #14

                              We’re still in a galaxy.

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                                canadaplus@lemmy.sdf.org
                                wrote last edited by canadaplus@lemmy.sdf.org
                                #15

                                It’s not really a smoking gun, but if their analysis is correct it’s highly suggestive, especially when alternatives to LambdaCDM still consistent with measurements have proven really hard for the theorists to make.

                                Edit: Although what does this say about the cosmic distance ladder?

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                                  motoash@lemmy.world
                                  wrote last edited by
                                  #16

                                  “Void” is much too dramatic of a word for science communication… 20% less dense than city population doesn’t even get you to suburban levels of density, let alone anything near “void”.

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