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Re: Do you believe in a multiverse?

Posted: 15 Jul 2012 20:23
by Ty8200
SGraham wrote:
Jack Reacher wrote:Its almost flat, the critical density value is extremely close to 0. I think it has something to do with whether the universe is open or closed, open being infinite, closed being finite.
i see, it's flat like a piece of paper is flat - almost flat



Haha, turns out I was right! It really is just a piece of paper!!! :lol:

Re: Do you believe in a multiverse?

Posted: 15 Jul 2012 21:31
by Jack Reacher
...anyway this also relates to multiverse theory. Its strange that the density just happens to be so close to zero, that its finely tuned to this value. Any other value and the universe would be a completely different shape due to inflation. The anthropic principle suggests that there are multiple universes each with a different critical value, and that all of them that arent flat dont have the right conditions to form stars, planets, and thus life.

So it isnt a coincidence that the universe happens to be flat, because if it wasnt we wouldnt be around to realise that.

Re: Do you believe in a multiverse?

Posted: 17 Jul 2012 17:38
by Ty8200
Jack Reacher wrote:...anyway this also relates to multiverse theory. Its strange that the density just happens to be so close to zero, that its finely tuned to this value. Any other value and the universe would be a completely different shape due to inflation. The anthropic principle suggests that there are multiple universes each with a different critical value, and that all of them that arent flat dont have the right conditions to form stars, planets, and thus life.

So it isnt a coincidence that the universe happens to be flat, because if it wasnt we wouldnt be around to realise that.


But I don't get something. If the universe is flat, then that would mean everything in the universe must be flat as well, and didn't we prove the earth and other planets aren't? We sailed to the edge and didn't fall off. Well, we put a stick in the ground and observed the shadow, same difference.

Re: Do you believe in a multiverse?

Posted: 20 Jul 2012 19:51
by WildCat23
Ty8200 wrote:But I don't get something. If the universe is flat, then that would mean everything in the universe must be flat as well,...

no...

Re: Do you believe in a multiverse?

Posted: 28 Jul 2012 19:37
by Ty8200
WildCat23 wrote:
Ty8200 wrote:But I don't get something. If the universe is flat, then that would mean everything in the universe must be flat as well,...

no...


Why? And please don't say "because".

Re: Do you believe in a multiverse?

Posted: 28 Jul 2012 22:59
by jamjam
http://wiki.answers.com/Q/Why_is_our_universe_flat
I think it isn't flat... so do a lot of other people.

[ Post made via iPad ] Image

Re: Do you believe in a multiverse?

Posted: 30 Jul 2012 00:04
by Ty8200
jamjam wrote:http://wiki.answers.com/Q/Why_is_our_universe_flat
I think it isn't flat... so do a lot of other people.

[ Post made via iPad ] Image


No one really knows. I'm not going to argue one way or another, but no matter how many people think of anything, it doesn't make it true.

Re: Do you believe in a multiverse?

Posted: 30 Jul 2012 01:27
by jamjam
Ty8200 wrote:
jamjam wrote:http://wiki.answers.com/Q/Why_is_our_universe_flat
I think it isn't flat... so do a lot of other people.

[ Post made via iPad ] Image


No one really knows. I'm not going to argue one way or another, but no matter how many people think of anything, it doesn't make it true.
No one really knows... YET!

[ Post made via iPad ] Image

Re: Do you believe in a multiverse?

Posted: 05 Aug 2012 00:57
by lucidinthe sky
Do you believe in a multiverse?

The answer is simple: In exactly one half of the existing universes I believe, in the other half, I don't. :)

But seriously, how do we even know that the universe we experience exists? We think that everything we experience with our 5 senses is absolute, but our universe must be created by our brains. To a worm, the inside of an apple is the universe.

Re: Do you believe in a multiverse?

Posted: 05 Aug 2012 11:02
by Snaggle
I would have voted 'none of the above' if that had been in option, as is I voted 'no man that's wack'.