Comment on one bright second

• humorlessrepost@lemmy.world ⁨12⁩ ⁨hours⁩ ago

  If it’s mathematically equivalent to the starting conditions of our universe, why would it behave differently.

  source

  • dream_weasel@sh.itjust.works ⁨12⁩ ⁨hours⁩ ago

    I don’t think you can argue that it’s mathematically equivalent. Just because space and time become so spread that they are effectively meaningless is not the same as them having not existed and then beginning to exist. Neither can you really say that since any baryons that have not decayed are so far apart none of them interact that they behave like the concentration of all matter in the known universe. At those scales of time I’m not even sure that there are any left.

    It’s like arguing that one tiny piece of something in one place is the same as all the matter and all of space and time being in one place: it’s I guess analogous but not equivalent. I will of course caveat and say that my undergrad physics degree did not cover end of the universe timelines lol. Kurzgesagt does have a video though.

    The cyclical universe approach as I understand it is predicated on an eventual big crunch which I don’t think is being argued anymore.

    source

    • humorlessrepost@lemmy.world ⁨11⁩ ⁨hours⁩ ago

      Oh don’t get me wrong, I’m not saying he’s right. I just thought the objection was to that specific part, and I thought that part reasonably followed if the earlier parts were accepted.

      source

      • dream_weasel@sh.itjust.works ⁨11⁩ ⁨hours⁩ ago

        I guess I’ll have to read up. I have potentially had a long running misunderstanding.

        source
    • Blemish5236@lemmy.world ⁨10⁩ ⁨hours⁩ ago

      www.youtube.com/watch?v=PC2JOQ7z5L0

      The cyclical universe approach as I understand it is predicated on an eventual big crunch which I don’t think is being argued anymore.

      The universe is definitely cyclical, the only real question is: how?

      source
    • StarvingMartist@sh.itjust.works ⁨7⁩ ⁨hours⁩ ago

      Unless it’s been disproven it’s not “not being argued anymore”

      source
• Eagle0110@lemmy.world ⁨5⁩ ⁨hours⁩ ago

  Yeah I also think it would take a lot more than just one single bit of discrete information in an universe of completely uniform and homogeneous nothingness, to restart the universe lol /s

  source
• Karjalan@lemmy.world ⁨7⁩ ⁨hours⁩ ago

  Because things haven’t progressed linearly with the universes evolution, and, as the op stipulates, we are part of one second vs countless billions of years (relatively) till it’s theoretical demise, it is possible/probable that we don’t know what will happen down the line.

  Certain things might change to make it possible that we simply can’t predict due to lack of information (the future) and technological difficulties.

  source