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Old 12-14-2005, 04:22 PM   #11
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Quote:
Originally Posted by MrWhy
The events we currently observe usually have a cause because we see things framed in time.
I would state that the events we currently observe ALWAYS have a cause. Can you provide some causeless events? I am not aware of any but I am willing to listen and learn.
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Old 12-14-2005, 04:39 PM   #12
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Quote:
Originally Posted by ARISCE
I would state that the events we currently observe ALWAYS have a cause. Can you provide some causeless events? I am not aware of any but I am willing to listen and learn.
I just put in the word "usually" because some that know quantum mechanics may suggests there's uncaused stuff going on. From our limited view there's always a cause. Some say all behavior has a cause, but we should not go there on this thread.
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Old 12-14-2005, 07:29 PM   #13
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Hello Tremendoustie!

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I'm not saying that if we can't say how something happened then "God did it". I'm only saying that if we accept that events have causes, and the Universe obeys Entropy, then there exist some causal agent that does not exhibit Entropy. It is not nessary to call this agent God, and you are correct to note that nothing can be inferred about it. I do think, however, that since all physical systems that we have observed exhibit Entropy, it is likely that this agent is not a purely physical system.
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I'm only saying that if we accept that events have causes
Events have causes within spacetime. There is how can cause and effect operate separate of space and time? If space and time began with the universe, there is no reason to accept it had a cause.


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the Universe obeys Entropy then there exist some causal agent that does not exhibit Entropy.
If you mean the four dimensional, observable universe, then yes. But, if you are trying to claim some “cause�? for this universe, then you must postulate a meta universe, whose properties we can’t even guess at. There is no reason to speculate that if some causal agent exists, that it is not subject to entropy.

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I do think, however, that since all physical systems that we have observed exhibit Entropy, it is likely that this agent is not a purely physical system.
What kind of system do you think it is?
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Old 12-15-2005, 03:22 AM   #14
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Quote:
Originally Posted by tremendoustie
<snip>

I'm not saying that if we can't say how something happened then "God did it". I'm only saying that if we accept that events have causes, and the Universe obeys Entropy, then there exist some causal agent that does not exhibit Entropy. It is not nessary to call this agent God, and you are correct to note that nothing can be inferred about it. I do think, however, that since all physical systems that we have observed exhibit Entropy, it is likely that this agent is not a purely physical system.
Since this particular forum deals with discourse relating to "Existence of God(s)" it is generally expected that a proposition such as you made in the OP would somehow relate to the existence or non-existence of some deity. If you are interested in a purely academic scientific discussion of theories partaining to the origin of the universe you'll probably have better luck in the "Science & Skepticism" forum of IIDB rather than this one.

Be that as it may, I still maintain that historical precident suggests there is always a perfectly reasonable and natural explanation of every observable event in nature. Just because we (currently) lack the sophistication to explain an observed (or perceived) phenomenon doesn't mean there isn't a perfectly rational explanation for said phenomenon without resorting to the supernatural. I have yet to see a positive, debatable argument for any deity that is not simply another argument from ignorance or incredulity. (Non-debatable arguments would include such things as claims of personal contact with God).

-Atheos
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Old 12-15-2005, 04:46 AM   #15
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Quote:
Originally Posted by tremendoustie
I will define the Universe as the whole spacetime continuum in which we exist, together with all the energy and matter within it.

There are three possibilities:

1. The Universe has always existed and is a closed system.

2. The Universe has not always existed, yet is a closed system.

3. The Universe was not a closed system, either at some point in its history or at its origin.

1. Let us assume Case 1. Now, we know that the total potential energy of a closed physical system decreases monotonically. This is known as Entropy. Also, if at any point in the history of the Universe there were any period of time over which its potential energy remained constant, the Universe would be forever frozen in that state. Thus, we may say that the total potential energy in the universe has been strictly decreasing. Taken with our assumption that the universe has always existed, however , the total potential energy in the Universe should then now be zero, which is contrary to what we observe. Thus, if the law of Entropy applies to the Universe, case 1 is false.
This is wrong. You assume "always" means "indefinitely in the past" or "infinite past". This is not necessarily so. I believe that the universe has "always" existed but that this "always" do not necessarily stretch indefinitely in the past. I.e. the universe has a certain age X and you cannot go further back in time than X X is in this respect a boundary in time for the universe and you cannot find a valid point in time that is before X. You might possibly not even find a valid point in time that is at X either and so only valid points in time is less than X, i.e. you can go less than X into the past.

Put it this way, if we envision that the age of the universe as measured from us can be given a value T then we can go back in time (in our mind) to yesterday and find a lower value for T - namely T - 1 day. Thus, T represent the age of the universe in some sense. Now, it is quite possible that the only valid values of T are values that are strictly positive, i.e. T > 0 is the only valid points in time. This means you can pick any valid point in time T and you can find an earlier time such as T/2 or T/100 but you will always end up with times that are strictly positive. Thus, the set of valid times form an open interval of values.

Since There is a certain value 0 that you cannot reach and certainly not go beyond to negative values it is easy to see that the universe has not existed "forever" and thus your conclusion does not hold. However, it can still be said to "always" exist since "always" refer to all valid points in time of the past and the universe existed at those times.

Since in this model there never was a time 0 at which point the universe did not exist, it did not need to be created either.

Quote:
Originally Posted by tremendoustie
2. Case 2 restated says that the Universe came into existance at some finite period of time in the past, without cause.
This is problematic. If you have a valid point in time and space then you also have matter and energy at that time and thus you have a universe. Thus there never can be a valid point in time at which the universe did not exist.

Quote:
Originally Posted by tremendoustie
3. According to Case 3, there is at least one system outside of the universe, which we may call a "causal agent", which has affected the Universe in some way, at some point in the past, most notably by increasing the potential energy in the universe, or by causing the Universe to occur. We must also consider any system which has affected a causal agent to be an causal agent itself. Now, we may substitute "The combined system consisting of the The Universe together with all causal agents" for "The Universe" above, and we are met with the same set of possibilities, except that because our new system is closed by definition, we may only choose between possibilities one or two.
Exactly.

Quote:
Originally Posted by tremendoustie
Thus, we are left with three possibilites. Either we must accept that events may occur without any cause whatsoever, or the law of Entropy does not apply to the Universe, or the law of Entropy does not apply to a system which has affected the Universe.
The first one is obviously true. There are observed effects that occur without cause in the labs.

The second one is also reasonable.

The third one is also reasonable if you assume there is something apart from the universe. Since we can then simply redefine the universe to include that external agent, this option seems rather artificial.

Also note that the first and second do not conflict with each other, they may very well both be true and the first one is demonstrably true in the lab today so it is not a disputed finding.

Quote:
Originally Posted by tremendoustie
In my opinion, it would be a very bad idea to hold that events may occur without cause.
Why? Are you saying that quantum mechanics is all bunk? Are you saying the Casimir effect is just an illusion?

Quote:
Originally Posted by tremendoustie
This would not only repudiate the basis of the scientific method,
No, it doesn't. QM has observed uncaused effects for years and science has had no problems with it.

Quote:
Originally Posted by tremendoustie
but would be an untenable position from which to form any conclusions based on experience or observation.
Tell that to HRG and Sven and others who work in physics labs.

Quote:
Originally Posted by tremendoustie
It would be less drastic to suppose that the law of Entropy does not always apply to the Universe.
Actually, we have no valid reason to claim it does apply to the universe. The law is a formulation of observed effects inside the universe and it would be a category error to claim it must necessarily hold for the universe itself.

Quote:
Originally Posted by tremendoustie
This conclusion is also difficult, however, because all evidence suggests that it does.
See above. Since it is a logical error to claim it must hold it is unproblematic that it doesn't. What evidence are you referring to?

Quote:
Originally Posted by tremendoustie
I think the most reasonable conclusion is that Entropy does not apply to a system which has affected the Universe. Because all physical systems that we have observed exhibit Entropy, it is likely that this system does not closely resemble a physical system. Although this is of course not a proof, I think that this is a reasonable basis for a belief in the existance of God (we don't, of course, from this have any idea as to the character or nature of God).
Fair enough. Howver, since your premises are faulty it doesn't actually follows that I will necessarily agree with your conclusion.

Quote:
Originally Posted by tremendoustie
"The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?"
-Stephen Hawking
That question presupposes a creator. If the universe were not created there is no why. If you see a man or a cat walking along a path and then suddenly turn left, you will ask yourself why he did so, because you know that the man or the cat had some intent - a purpose. Thus, it is reasonable to ask why he suddenly turned left.

If you observe a plastic bag flying along the wind along the same path and then suddenly the wind causes it to turn left you won't ask why did the bag want to turn left. The bag has no intent, it goes wherever the wind takes it.

So, if the universe was not created, it is meaningless to ask why it bothers existing.

So Stephen Hawking was wrong. The guy cannot be right in everything.

Quote:
Originally Posted by tremendoustie
By the way, I'm sure we can have a reasonable, mature, interesting discussion. Please take time to revise, and to carefully consider any responses before posting. Let's be considerate and open minded.
I agree with you there and I hope you feel welcome here in IIDB. Even if I disagree with some things you said above doesn't mean that I have anything personal against you. I hope you see that goes for all of us.

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Old 12-15-2005, 05:27 AM   #16
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Quote:
Originally Posted by ARISCE
I would state that the events we currently observe ALWAYS have a cause. Can you provide some causeless events? I am not aware of any but I am willing to listen and learn.
Read up on quantum mechanics. Check out in particular things such as quantum fluctuations, casimir effects etc.

I believe also HRG has a good example that he told us about once.

It is a particle which has no spin but is unstable and then decays into another particle that does have spin. Where did that spin come from? It has no cause, it is an effect without cause.

These things has been observed in the lab.

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Old 12-15-2005, 05:59 AM   #17
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Quote:
Originally Posted by Alf
Read up on quantum mechanics. Check out in particular things such as quantum fluctuations, casimir effects etc.

I believe also HRG has a good example that he told us about once.

It is a particle which has no spin but is unstable and then decays into another particle that does have spin. Where did that spin come from? It has no cause, it is an effect without cause.

These things has been observed in the lab.

Alf
Thanks for the info. I will certainly read about QM. Can you suggest a "Beginner's" book that is easy reading. Looking forward to your response.
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Old 12-15-2005, 06:40 AM   #18
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So, whatever "caused" the universe to come into existence is itself exempt from entropy?
To cause a physical event requires energy. This "spiritual creative entity" which we seem to be discussing therefore posseses an energy which can be translated into a physical process.
Is it observed in the universe we know; in other words, do we see "spiritual" powers having physical effects?
Well, it is certainly claimed that we do, but every claim, it turns out, requires a willingness to believe that the "effect" was indeed caused by shere spiritual, or supernatural power. History shows us that rigorous investigation of such claims shows them to be fraudulent or misunderstood. Indeed, Mr James Randi is waiting even now, with a prize of $1m for the person who can demonstrate a spiritual or supernatural force which can produce physical effects.
No-one has been able to.

Film goers are familiar with supernatural powers doing all sorts of wonderful things, but the films in which they are seen are works of fiction - and in fiction anything at all is possible. Because something is depicted on the screen, and looks real, doesn't mean it is.

It should not be beyond the power of an all-powerful deity to provide incontrovertible evidence of its ability to interact with the physical universe.
The reason it doesn't, we're told by religionists, is not because no such entity exists (the rather obvious explanation) but because this all-powerful deity chooses not to demonstrate its power in case we should be coerced into believing it exists. We must have "faith" that it exists, and having "faith" is so commendable, apparently, that those who possess it will be rewarded with an eternity of heavenly bliss.
This "supernatural creator being" certainly seems to be on the quirky side, because what it values above all else is a person's imaginative powers.

And when we use our imagination, as we see in films and read in books about the supernatural, anything is possible. It is even possile that a being which is not of our universe and has existed for ever, created our universe.

Discerning the difference between fiction and reality is something religionists don't seem to be very keen on.
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Old 12-15-2005, 07:42 AM   #19
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Quote:
Originally Posted by ARISCE
Thanks for the info. I will certainly read about QM. Can you suggest a "Beginner's" book that is easy reading. Looking forward to your response.
I am afraid I don't have any such suggestion. The ones I read when I started to read up on QM was hardly what you would call "beginner's books".

However, if you go to any bookstore that sell books on physics I am sure they can help you and often the people in such bookstores have lots of knowledge about which books are recommendable and not - at least this is the case in Norway.

I would believe there are other posters who probably also might recommend some for you. HRG and Sven are two posters here who study these things. I am sure they would know of some books.

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Old 12-15-2005, 09:16 AM   #20
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ARISCE, you might also want to check out the Recommended Reading sticky at the top of the Science and Skepticism forum - they'll have good recommendations in there.
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