Well atleast the universes that are stable and complex (not the "extreme" universes), would these universes "fine-tune" their own inhabitants just like our universe "fine-tuned" us?

Quantum mechanics has 29 adjustable parameters. It is unsettling to say the least that most scientists don't have much faith in a theory that is so dependant upon experimental evidence. Regardless, the theory holds true, no matter the refinement to the variables.

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>~~~~<
Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.

Religion is a culture of faith; science is a culture of doubt.

Man....I dont understand what you just typed

ops:

TravisM means that the best theory we have at the moment cannot calculate from first principles parameters like the masses or charges of the fundamental particles.
We depend on measurements to get the values for those parameters.

Whether it is possible at all to calculate a priori the values of such parameters, is still an open question.

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papageno


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Yes. If they wouldn't be "fine-tuned" to their own universe, they would have hard time living in it. But I wouldn't say that universe fine-tunes the inhabitants, instead I would rather say that the inhabitants adapt (-> evolution) themselves to the existing conditions, universe would just provide the conditions.

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Thats what I really meant, alot of universes would not be able to produce inhbatitants though right? Its not the inhbatitants would have a hard time living in these "extreme" universes, they simply wouldnt exist.

So yeah, inhbatitants would evolve in these universes which allows them to exist.

Surely there would be alot that would allow life

We discuss a lot about "multiverses", but we have as much evidence of their existence as we do of ufos. We have been conditioned by exotic theories and science fiction to accept the ideal of parallel universes, etc., but probably there is only one universe - ours.

How can you say what is probable and what is not when we do not have a shred of evidence for it or against it

Agreed... We just don't know, and for now we can't really do any better than that.

As for "fine-tuning": I second what Ari said. Life adapts to the conditions it evolves in... And life "incompatible" with a universe on some fundamental level simply cannot evolve in that universe, since the universe's laws of physics would not permit it.

Yeah....if there were other universes how many would allow life to emerge, I know this is a pretty unanswerable question since we just cannot know but thats me....and would life evolve in most of these universes except the ones with like no matter or no energy or something or protons, neutrons, etc unstable....basically the unstable universes would probably be off the "life-bearing" universes list

This is the type of ufologist reasoning which has been under attack on this forum.

But its true though...how can you possibly know, theres no law against multiple universes

I don't think there's any comparison between speculation involving multiverses and UFOs, unless of course one thinks multiverses are actually seen zipping through our skies.You're right, we don't know. There could be multitudes of other universes or maybe this is it. There was a special on one of those discovery/science type channels recently that talked about that sort of thing but I only caught the tail end of it so I don't know if it was speculated on how we might detect these other universes if they exist.

I am not saying I know, I am saying there is absolutely no physical proof. It sounds like metaphysics.

How can you possibly know, there might be a law against multiple universes.

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"Stupidity gets denser in the crowd" - Old Finnish saying. [My website] [Nimblebrain forums]

But this whole thread is about assuming there ARE other universes, Im not saying that they exist, but other universes is what this whole thread is about

OK, sorry for having been a spoilsport...

So, speculating... what if these parallel universes are very, very close by? If we assume curled up dimensions, what if the effect is like the different layers of skin on a human being? You look at someone and only see the outer layer, but there are hidden layers... And what if the proximity also implies a kind of similarity, so that your "fine-tuning" applies...

I'm not sure if your question's premise is correct. Surely it would not make any difference if we could detect or see all the dimensions that exist in our universe - we would still be as isolated from parallel universes.

Any "proximity" we might have to other universes is a completely separate issue to the sizes and locations of our hidden and curled up dimensions.