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A multiverse (or meta-universe) is the hypothetical set of multiple possible universes (including our universe) that together comprise all of physical reality. The different universes within a multiverse are called parallel universes. The structure of the multiverse, the nature of each universe within it and the relationship between the various constituent universes, depend on the specific multiverse hypothesis considered.
Multiverses have been hypothesized in cosmology, physics, philosophy, theology, and fiction, particularly in science fiction and fantasy. The specific term "multiverse," which was coined by William James, was popularized by science fiction author Michael Moorcock. In these contexts, parallel universes are also called "alternate universes," "quantum universes," "parallel worlds," or "alternate realities".
The possibility of many universes raises various scientific, philosophical, and theological questions.
It is sometimes argued that the observed universe is the unique possible universe, so that talk of “other” universes is ipso facto meaningless. Einstein raised this possibility when he wondered whether the universe could have been otherwise, or non-existent altogether. This possibility is also expressed in theories such as determinism and chaos theory. The hope is sometimes expressed that once a grand unified theory of everything is achieved, it will turn out to have a unique “solution” corresponding to the observed universe.
There are theories about time travel that talk about multiverse theories, parallel worlds or mirrored worlds, parallel dimensions and even parallel universes.
In those theories both worlds start equal. They are perfect copies of each other. When a time traveler from the future visits the past he will enter the parallel world and from there on the two worlds start being different. The future of the world that the traveler visits changes and moves in its own new direction. Not only a time traveler can cause these changes but also a simple message from the future could do that. In this respect it is not only the contents of the message that is responsible for the change but also the simple existence of a work of prophecy based on messages from the future.
It seems to me that in a multiverse theory you are not really traveling in time, it presumes a more or less parallel existence of different worlds. You might travel back to your own past, but from there on you are not in your own history time line anymore. Multiverse theories avoid the time travel paradoxes as the consequence of your actions continues in an alternative parallel world
The one they have come up with is multiple universes, or "the multiverse". This theory says that what we have been calling "the universe" is nothing of the sort. Rather, it is an infinitesimal fragment of a much grander and more elaborate system in which our cosmic region, vast though it is, represents but a single bubble of space amid a countless number of other bubbles, or pocket universes.
Things get interesting when the multiverse theory is combined with ideas from sub-atomic particle physics. Evidence is mounting that what physicists took to be God-given unshakeable laws may be more like local by-laws, valid in our particular cosmic patch, but different in other pocket universes. Travel a trillion light years beyond the Andromeda galaxy, and you might find yourself in a universe where gravity is a bit stronger or electrons a bit heavier.
The vast majority of these other universes will not have the necessary fine-tuned coincidences needed for life to emerge; they are sterile and so go unseen. Only in Goldilocks universes like ours where things have fallen out just right, purely by accident, will sentient beings arise to be amazed at how ingeniously bio-friendly their universe is.
It's a pretty neat idea, and very popular with scientists. But it carries a bizarre implication. Because the total number of pocket universes is unlimited, there are bound to be at least some that are not only inhabited, but populated by advanced civilisations - technological communities with enough computer power to create artificial consciousness. Indeed, some computer scientists think our technology may be on the verge of achieving thinking machines.
It is but a small step from creating artificial minds in a machine, to simulating entire virtual worlds for the simulated beings to inhabit. This scenario has become familiar since it was popularised in The Matrix movies.
Now some scientists are suggesting it should be taken seriously. "We may be a simulation ... creations of some supreme, or super-being," muses Britain's astronomer royal, Sir Martin Rees, a staunch advocate of the multiverse theory. He wonders whether the entire physical universe might be an exercise in virtual reality, so that "we're in the matrix rather than the physics itself".
Is there any justification for believing this wacky idea? You bet, says Nick Bostrom, a philosopher at Oxford University, who even has a website devoted to the topic ( www.simulation-argument.com...). "Because their computers are so powerful, they could run a great many simulations," he writes in The Philosophical Quarterly.
Originally posted by T0by
I don't really understand matter and atoms all that much, but I think the idea of something happening if 2 of the exact matters touched each other is strange.
I mean is every atom unique and different to every other one? And below the atoms on a quantum level where everything is supposed to be light anyway, what's the big deal if light touches another piece of light?
I dont know, I just can't imagine anything bad happening really.
But I can't explain anything scientifically of course
Originally posted by biggie smalls
I would be more willing to be there are multi 'Selves' as you call them in this universe.
I have been in contact with another version of my Self, you can too.
Enter meditation. Ask your Self to show you another version of your Self. Really be grateful, ask and pray for this to happen. You will be shown. I was shown the first time I tried it, but it kind of freaked me out so I have only done it once more .
Ask and you shall receive.
We are all ONE being following the steps leading us back to our Self.
Originally posted by biggie smalls
I would be more willing to be there are multi 'Selves' as you call them in this universe.
I have been in contact with another version of my Self, you can too.
Enter meditation. Ask your Self to show you another version of your Self. Really be grateful, ask and pray for this to happen. You will be shown. I was shown the first time I tried it, but it kind of freaked me out so I have only done it once more .
Ask and you shall receive.
We are all ONE being following the steps leading us back to our Self.
Originally posted by tobiascore
Start here: A possible Theory of Everything
Now, imagine our universe being a field of possibility. Our consciousness is connected to a larger system, but our physical self is constrained to this reality as a growth process that contributes to the evolution of the larger system of consciousness.
Physics understands that our reality is part of at LEAST 12 other dimensions intertwined with each other. This is called string theory. This is a small picture of how our universe works. The "bigger" picure is beyond our understanding. We live in a virtual universe, it's part of something way larger, which is part of something way larger and so on, and so on.
"There is NOTHING new under the sun". This quote says it all. Whatever we think of, is connected to something very real outside this physical reality. It's sobering.
Originally posted by kinglatin
Originally posted by tobiascore
Start here: A possible Theory of Everything
Now, imagine our universe being a field of possibility. Our consciousness is connected to a larger system, but our physical self is constrained to this reality as a growth process that contributes to the evolution of the larger system of consciousness.
Physics understands that our reality is part of at LEAST 12 other dimensions intertwined with each other. This is called string theory. This is a small picture of how our universe works. The "bigger" picure is beyond our understanding. We live in a virtual universe, it's part of something way larger, which is part of something way larger and so on, and so on.
"There is NOTHING new under the sun". This quote says it all. Whatever we think of, is connected to something very real outside this physical reality. It's sobering.
i know about the string theory aka M-theory
but it is yet too young or let's say to undeveloped.
it has it's formula correctly but it has no other proof of existance.
we live in a world were thing have to be seen to be believed ( in a way of speaking )
I am a believer of the string theory btw.
but the official release is that scientist know that we live in a 11 dimensional world. ( M-theory opens the 12 dimension ) correct me if i'm wrong Please!!
Well to There is nothin new under sun, you are right there is nothing new anywhere actualy but the thing is that we don't know that it exist cuz we haven't been able to be there yet. We only know a part. And to the everything is connected to something bigger, i support that but i think somewhere it should stop if it's not like that than we have an infinit.
[edit on 6-12-2007 by kinglatin]