A universe with no beginning or end

In summary, the problem of infinite regress has been around for a while, as the idea of an infinite past seems to lead to absurdities. While the big bang model seemed to have removed the idea of an eternal universe, certain inflation models bring it back.
  • #106
Originally posted by drag
you recognized above that there IS always
a chance things are different. So why keep
trying to deny what you can not ?

I suppose you are referring to my discussion of inductive reasoning. Of course, I do not try to deny that things can be different than how I understand them. If so, then I could never accept a new theory.

The flipside to the "inductive logic" coin that you are not seeing here is "falsifiability". We hold to ideas about the universe until they are proven wrong and supplanted by better ones, recognizing all the time that the new ideas are only tentative. The guiding principle should be that the acceptance of new ideas must bring us closer to our experiences, not farther away from them.

In the case of arguing for a "god", there is no connection to our experiences whatsoever. Thus, we cannot say anything meaningful about it.
 
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  • #107
Greetings Tom !
Originally posted by Tom
The guiding principle should be that the acceptance
of new ideas must bring us closer to our experiences,
not farther away from them.

In the case of arguing for a "god", there is no
connection to our experiences whatsoever. Thus,
we cannot say anything meaningful about it.
ONLY IF by "our experiences" you mean our
physical theories and ONLY the laws themselves
rather than any interpretations. And even then,
it's just a "likely" guiding principle.

Otherwise, some people might mistakenly
think you really mean our experiences, which
would be a rather ridiculous thing for them
to think because current theories like GR and
QM appear to go AGAINST our experiences.

Live long and prosper.
 
  • #108
Originally posted by drag
ONLY IF by "our experiences" you mean our
physical theories and ONLY the laws themselves
rather than any interpretations. And even then,
it's just a "likely" guiding principle.

No, theories are not experiences. Theories are how we make sense of our experiences. Experiences are observations and measurements of things in the world. In regards to knowing the universe, such experiences are the only things to which we have access, and as such are the only things we can really know.

Otherwise, some people might mistakenly
think you really mean our experiences, which
would be a rather ridiculous thing for them
to think because current theories like GR and
QM appear to go AGAINST our experiences.

Arguments from ignorance are never valid, drag. If people choose not to become informed of experimental results, then that kills the discussion. Or, in some cases, makes it go on for 20 pages (but it is really dead by about page 2).
 
  • #109
Greetings Tom !
Originally posted by Tom
No, theories are not experiences. Theories are how we make sense of our experiences. Experiences are observations and measurements of things in the world. In regards to knowing the universe, such experiences are the only things to which we have access, and as such are the only things we can really know.
In that case, it sounds like a rather pathetic
guiding principle...:wink:

"When I examine myself and my methods of thought,
I come to the conclusion that the gift of fantasy
has meant more to me than my talent for absorbing
positive knowledge."
Albert Einstein

Originally posted by Tom
Or, in some cases, makes it go on for 20 pages
(but it is really dead by about page 2).


Live long and prosper.
 
  • #110
Originally posted by drag
In that case, it sounds like a rather pathetic
guiding principle...:wink:

I guess you've never heard of Karl Popper. He was the founder of this principle, and indeed of the modern scientific method (which I have sketched here). According to many, he is to philosophy of science what Einstein is to physics and Goedel is to logic. You really should read up on it, instead of snickering at it.

http://www.eeng.dcu.ie/~tkpw

"When I examine myself and my methods of thought,
I come to the conclusion that the gift of fantasy
has meant more to me than my talent for absorbing
positive knowledge."
Albert Einstein

And how many of these fantasies did he publish? Whatever he used as inspiration, or whatever it was that brought him happiness are one thing. The technical business of shedding falsified theories is quite another.
 
  • #111
Thanks for the link. :smile:
 
  • #112
Originally posted by Lifegazer
I do not argue for a cause outside/external to existence. I argue for a cause within existence itself. Existence is 'the whole', and any changes which occur must emanate from inside existence.
Thus, the time-evolution of the state of a system is not logically-impossible from a static-state, since the system can be affected by an internal impetus. Namely will.

A concept of will isn't applicable to the totality of things, and whatever we can consider will to be, it isn't something static, and ultimately dependend on already existing material world, including change, motion, etc.
Will in the context of a human mind, is always an envision of using some capacity (maybe future capacity) of own's own body or mind, will is not something that can exist on its own.

Within the context of a pure material world, will is for certain not something applicable, same as consciousness and like, they are mental capacities, functioning within the context of an existing mind and body, and not having meaning outside that context.
 
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  • #113
Originally posted by Lifegazer
Equations apply to effects of time. They do not ponder time's own cause. Physical-equations cannot be used as evidence that time has no origin. I'm surprised you don't see that.

No, indeed, they come from another fact, namely that unchanging existence remains unchanging throughout all of eternity, which is for most people the reason to think that time did not have a beginning.
As for the use of mentioning terms like 'cause' you use it in a strange way, by saying time had a cause. Time for sure did not have a cause, because any causual connection assumes an already existent time. This comes from the ambiguity of language, when we say what is the cause for some mathematical expression to be true, we don't imply that the laws of causality govern mathematics, like 1 and 1 are causes for 2 to be their sum, as if mathematics would be the real world, with effects happening in time.

The efforts to explain existence, in terms of 'Unchanging-Existence' and things a like, are futile attempts to explain that there is an existing world, which does have an ordinary explenation. See for example the thread 'The Fundamental Question'.
Some of the ways to answer this question ("Why is there something, instead of nothing") point to the impossibility to answer the question, or to the fact that the question itself is meaniningless, or just a tautology ("something" has existence, whereas "nothing" has not).
 
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  • #114


Originally posted by heusdens
Well, what you state here is simply nonsens, cause material existence which does not implie motion and/or change, and thus requires time and space and time to exist, is a gross absurdity.

Change can not start from nothing, there is always a previous change. If there was at some time no change or motion at all, then where would that initial change/motion come from?

Your reasoning become very absurd. Time/change popping up from nowhere is as absurd as existence popping up from nowhere.
If time or change is said to have a beginning, then that itself was a change, at a time where it is said, there was no change. Which can for obvious reasons, not have been the case.
Because existence implies change and motion, there can't have been a state of existence in which there was no change or no motion. it would be an endless state of existence in which nothing whatsoever changes. What kind of existence would that be?

But with your stubborn kind of reasoning I guess you will never get at it.

I know I'm jumping aboard this thread a little late but--and I also know this may be a subject more appropriately addressed in the religion forum, but it follows naturally from the original topic--the notion of eternal chaotic inflation sounds an awful lot like the Buddhist conception of the Cycle of Samsara, in which the universe is a great wheel spinning eternally according the rule of cause and effect. It is this aspect of Buddhist belief that leads to the idea of rebirth and karma. The reasoning goes, the universe has always existed and will always exist, but as it spirals endlessly toward chaos, repeating, relatively orderly patterns sometimes emerge (this may seem a somewhat creative, interpretation of these ideas, but this interpretation is well supported by Buddhist texts). Consciousness, the argument goes, viewed on a higher-level is just such a pattern. And since all physical systems must in some sense be reproducible, why not consciousness too--even down to the level of individual experiences of consciousness?

I only offer these remarks because I believe that some aspects of Buddhist cosmology are remarkably sophisticated, and there are many volumes of keenly analytical debate on similar topics in Buddhist doctrinal texts.
 
  • #115
Welcome to the forum Steven,

Buddhist cosmology does not necessarilly belong in the religion forum. Many Buddhists are philosophical rather than religious Buddhists. Essentially, they are Pantheists and can be Atheists or Agnostic who practice or believe in a simplified version of Buddhism.
 

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