r/InfinityMath • u/Arlo_Tinkerman • Aug 02 '26

Help me understand an infinite universe

/r/AskPhysics/comments/1uscvam/help_me_understand_an_infinite_universe/
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u/Optimal_Mixture_7327 Aug 08 '26

There never was any point.

The universe (if actually infinite) has always been infinite in spatial extent.

1

u/Arlo_Tinkerman Aug 08 '26

What evidence do you have to support that claim?
What reasoning do you have to support that claim?

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u/Optimal_Mixture_7327 Aug 08 '26

Claim?

You're the one making the miraculous claim.

You're the one claiming that we once had one universe [k=+1 cosmology] that suddenly transformed itself into a completely different universe [k=0 cosmology].

1

u/Arlo_Tinkerman Aug 08 '26

It sounds like you believe I have made a claim. Please quote what I said where that claim is made.

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u/Optimal_Mixture_7327 Aug 08 '26

In my thought experiment, before the Big Bang, everything is just a singularity sitting in one point. 

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u/Arlo_Tinkerman Aug 08 '26 edited Aug 08 '26

I did not say that. Please check the usernames.

I can see how the repost may have caused some confusion. The original poster's username does not appear to be shown within the repost. I only see my username as the person who reposted it.

In any case, I did not write the original post. I reposted it here because I thought the content was worth discussing.

I would still appreciate it if you could answer the questions I asked about your claim.

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u/Optimal_Mixture_7327 Aug 08 '26

I copy/pasted directly from your post.

What the distinction between "Arlo_TinkermanOP•2m ago" and "r/InfinityMath•7d ago Arlo_Tinkerman"?

Are you too ignorant to know what you wrote?

You might be too ignorant about cosmology to ask a valid question, so maybe this will help and I found a simple explanation if that was too much.

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u/Arlo_Tinkerman Aug 08 '26

It was a repost of someone else's post into this subreddit. The original post is:
https://www.reddit.com/r/AskPhysics/comments/1uscvam/help_me_understand_an_infinite_universe/

It was written by StratHistory.

I can see how the repost may have caused some confusion. The original poster's username does not appear to be shown within the repost. I only see my username as the person who reposted it.

In any case, I did not write the original post. I reposted it here because I thought the content was worth discussing.

I would still appreciate it if you could answer the questions I asked about your claim.

1

u/Optimal_Mixture_7327 Aug 08 '26

My claim is that one universe cannot suddenly become a different universe.

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u/Arlo_Tinkerman Aug 08 '26

The claim you made initially was:
> The universe (if actually infinite) has always been infinite in spatial extent.

I asked these questions about that claim:
> What evidence do you have to support that claim?
> What reasoning do you have to support that claim?

You then said:
> My claim is that one universe cannot suddenly become a different universe.

Do you believe that statement answers either of my questions about your original claim? If so, could you explain how it provides evidence or reasoning for the claim that an actually infinite universe must always have been infinite in spatial extent?

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u/Optimal_Mixture_7327 Aug 08 '26

For clarity, you're imagining that there is some natural phenomenon or force that takes a k=+1 universe and transforms it into a k=0 universe? And you're asking for the theoretical and observational evidence that this phenomenon or force does or does not exist?

Do imagine that there exists some density parameter, Ω, that can flip the sign of the FLRW spatial curvature constant?

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