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f_d t1_j4dxahc wrote

Reply to comment by [deleted] in The multiverse by Manureofhistory

Infinite time doesn't have to mean endless possibilities. Everything could all play out the exact same way an infinite number of times. Nothing has to change between instances of a repeating universe.

You can also have a finite starting point that expands endlessly to infinity, like a simple graph that keeps going up and up and up the farther you plot it. If the universe keeps expanding and entropy keeps increasing, eventually you get a cold universe where everything is too far apart and too depleted for anything new to happen. Even though many different things happened earlier in that universe, all of its future will be spent quietly in the dark with everything more or less uniform.

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[deleted] t1_j4dyt36 wrote

[deleted]

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f_d t1_j4egd0c wrote

>For something to happen the same way an infinite number of times in itself is the most improbable of actions .

You are assuming the universe is not already set up so that everything repeats perfectly. There's nothing improbable about a predestined outcome.

>We do know a lot of galaxies are being sucked to a certain spot in the universe right now called the great attractor and we don’t know why.

All you need is gravity. It's on the other side of our galaxy, so we just can't get a good look at it.

>The problem with the heat death theory is we don’t have enough information to say that is even probable it is just a theory like everything else.

We know what happens to space and energy over time in this universe. We can predict what will happen far into the future based on this. It isn't guaranteed to happen, but it is by far the most likely outcome if nothing drastically changes about what is currently understood. Things like being a simulation that is suddenly turned off are so far outside our normal experience that there is no point trying to assign probability to them. We can predict based on the things we can experience, not outside intervention.

>We see a little picture and extrapolate a big picture and even though that is one of the most popular theory’s it is still as likely as we get to a certain point and it all sucks back and restarts.

You can't make useful predictions about likelihood based on that kind of supposition. You only can make useful predictions about likelihood if you begin from the currently understood behavior of the universe and build from there. And you certainly can't say that on the one hand, heat death is equally likely because anything can happen with equal probability, but on the other hand, an infinitely repeating universe is less likely than everything else. Either we stick to things we can actually predict with different amounts of likelihood based on current observations, or we make up whatever we want and call any of our made-up scenarios as likely as anything else.

An infinitely repeating sequence of events is completely possible as long as everything is lined up the right way at the start. And if there is somehow any kind of eternal repetition of the birth and death of the universe, an infinitely repeating cycle of events would be much more stable and likely to repeat itself than a different sequence each time. Existing in such a cycle would make the likelihood of that cycle existing one hundred percent, no matter how easy or hard it is to create the cycle in the first place.

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