• girl@lemm.ee
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    11 months ago

    As in the classic theory idea, that each time a decision is made a new reality is created for each choice? For it to be possible would break our fundamental laws regarding conservation of mass and energy. Where would this alternative universe get all that energy and mass from? It’s possible our current understanding of the law is inaccurate, but it’s extremely unlikely.

    • heeplr@feddit.de
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      11 months ago

      why would alternative universes share a single source of energy? couldn’t each have their own?

      • girl@lemm.ee
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        11 months ago

        I’m thinking about the theory idea that involves a new universe being created every time a decision is made. Like if I flip a coin and get heads, another universe suddenly pops up where I got tails. It would need to create its own energy and mass out of nothing, which would break the laws of conservation.

        I’m not super well versed in multiverse theories hypotheses though. It is slightly more probable that when our universe began existing, so did all the other alternative universes, in which case they would all have their own energy and mass. But then there would be essentially no chance that we would have alternative selves like in classic multiverse theories, since each universe would have started from the very beginning of time and evolved on its own path.

        Edit: some wording

        • heeplr@feddit.de
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          11 months ago

          I’m no expert either but I never got the idea of a new universe popping up everytime. Do other universes also cause popups of new universes or just ours? That’d escalate quickly :-)

          I thought it goes that there’s already infinite universes existing from the big bang on. Otherwise universes would be created without big bang. (The new universe would just pop up and you’d still believe it was created by the big bang but there never was one)

          Also I’m not sure if laws of thermodynamics had to span accross universes. Take two theoretical perfect vacuum/radiation sealed boxes you put an energy source into. There’s no way to communicate between boxes. Each box had it’s own entropy and state of energy. Both would obey the laws of physics while being separate “systems”.

          That thought experiment wouldn’t work, if new boxes had to pop up if one of the boxes wanted to.