Could energy have always existed under the laws of thermodynamics?

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This is marginally off-topic, but it’s interesting, so I’ll proceed. In his review article “Philosophical Issues in Cosmology” (see forums.catholic-questions.org/showthread.php?p=7293197#post7293197
George Ellis makes the statement

The references are to one article I couldn’t access, and two books by Roger Penrose, “The Emperor’s New Mind” and “The Road to Reality”. In the latter, Penrose explores why the 2nd Law is valid, and concludes that it is puzzling, since there is a time symmetry in all the equations of physics. He further argues that entropy is increasing because at the very early life of the universe, it was in a highly ordered state (very low volume in phase space) and so what we see as the 2nd Law is just the evolution from that very small volume of phase space to a higher volume.
But he’s still puzzled.
Anselm
I’m not allowed to view that link. In any case, I’m not sure that the quote really speaks to the question…“Many statements about the nature of entropy in physics textbooks are wrong when gravity is dominant” is a long way from indicating that there are real processes which don’t comply with the Law.
 
I am starting a new thread here because this discussion was off topic for the thread “What is your favorite proof for God?”. Below is a link to the original thread, and a summary of the discussion. See the original posts on that thread for additional details.

Greylorn proposes that energy has always existed, and has and will always follow the laws of thermodynamics. I am trying to understand this, since it is the basis for some other work Greylorn has done. My initial thinking on this premise ran into a contradiction with the fact that we exist and can observe that the universe is not at equilibrium (i.e., uniformly all one temperature).

forums.catholic-questions.org/showthread.php?p=7134278#post7134278
Andy:

The word, “always,” means infinite, unless you substantially alter its meaning. While the Laws of thermodynamics would seem to give credence to your question, when reality runs smack up against infinity, there is an impassable obstacle. The obstacle is, “How do we get to this now point in time, synchronously parallel with energy, in an infinite system?” We can’t. There can be no mid-point, no end-point, no-starting point, no intermediacy, no “now,” in an infinite system. We can’t even say that maybe such an intermediate point may arrive in the future. Not in an infinite system.

That which is here and now, inside of time, that is real and physical, as opposed to spiritual, can never get to a point where everything occurs as a singular finite event. That energy exists for us now, is a singular finite event. Such an event must have a beginning.

God bless,
jd
 
I’m not allowed to view that link. In any case, I’m not sure that the quote really speaks to the question…“Many statements about the nature of entropy in physics textbooks are wrong when gravity is dominant” is a long way from indicating that there are real processes which don’t comply with the Law.
The link is just to get to the original article; you can also access it by going to the Magis Center group forum. I agree that Ellis’s quotation does not in itself imply much about the Second Law. However, if you go to Penrose’s discussion in the “Road to Reality” you will find that his assertion that the 2nd Law is puzzling, in light of the time reversibility condition.
Anselm
 
The link is just to get to the original article; you can also access it by going to the Magis Center group forum. I agree that Ellis’s quotation does not in itself imply much about the Second Law. However, if you go to Penrose’s discussion in the “Road to Reality” you will find that his assertion that the 2nd Law is puzzling, in light of the time reversibility condition.
Anselm
Never heard of either the Magis Center or the group forum here at CA. I’ve bookmarked them. But Penrose’s book is well above my level, I’ve only got a BA in Mechanical Engineering.

I wish I’d looked at your profile before telling you about information theory… I feel as if I’d given Johnny Trigg advice as to what wood he should try in his smoker (which I also did last August out west).

So now I want to ask… I got that bit about the information function right, yes?
 
:o
Never heard of either the Magis Center or the group forum here at CA. I’ve bookmarked them. But Penrose’s book is well above my level, I’ve only got a BA in Mechanical Engineering.

I wish I’d looked at your profile before telling you about information theory… I feel as if I’d given Johnny Trigg advice as to what wood he should try in his smoker (which I also did last August out west).

So now I want to ask… I got that bit about the information function right, yes?
yep, you had it fine.
:o, . And I blush about your remark about corrections. I can learn from any source, and the only reason the bio stuff is down there is to assure atheists when I talk about science and religion that I know something about science, if maybe not religion.

At any rate the Magis Center of Reason and Faith was founded by Fr. Robert Spitzer, to correct ideas that faith in God and science were incompatible. The web site for the Center is magisreasonfaith.org/
There’s lots of good stuff, including great astronomical pictures, and a link to a Facebook page for the Center.

If you want to see what the Magis Center social group forum is talking about, you can go to the Group section on the welcome page for forums, and then go almost to the bottom and you’ll the forum for the Magis Center.
enjoy,
anselm
 
Argh, I lost another post. I should really remember to copy what I write before submitting to the bit bucket. Let me try again:
You’ll note that in human affairs, higher levels of motivation are related to higher levels of intelligence. Thus the song, “Girls Just Want to Have Fun.” That is why our courts often exonerate imbeciles of crimes which, if committed by someone with an IQ of even 100, would warrant severe punishment— imbeciles and children are not considered as sufficiently intelligent to be motivationally responsible.

God, being infinitely intelligent by your beliefs, might be expected to have perfectly sensible and logical motivations, probably part of a complex agenda.

Do you honestly regard your tale about drawing a line beginning at some arbitrary point as a legitimate way to bypass a thoughtful discourse about the motivations of such an entity?
I not trying to bypass a discussion, merely to illustrate a point. The line segment in this case represents time. The starting point is T0, and we can’t see the end yet. The “paper” doesn’t exist, so it seems like we are imagining that the paper exists, and then claiming that the starting point of our line segment was arbitrary (or even had motivation X).

God is infinitely intelligent because he has all knowledge (finite or infinite, but not zero) and the amount of time He acquired it in is zero (He is in the Eternal Now). Therefore, the rate of knowledge acquisition (intelligence) is infinite. In addition, God’s knowledge is prefect, that is to say everything He believes is true because it matches reality. Our knowledge does not always match up with reality.

BTW, the song reference to motivation and intelligence went right over my head.
 
Andy:

The word, “always,” means infinite, unless you substantially alter its meaning. While the Laws of thermodynamics would seem to give credence to your question, when reality runs smack up against infinity, there is an impassable obstacle. The obstacle is, “How do we get to this now point in time, synchronously parallel with energy, in an infinite system?” We can’t. There can be no mid-point, no end-point, no-starting point, no intermediacy, no “now,” in an infinite system. We can’t even say that maybe such an intermediate point may arrive in the future. Not in an infinite system.

That which is here and now, inside of time, that is real and physical, as opposed to spiritual, can never get to a point where everything occurs as a singular finite event. That energy exists for us now, is a singular finite event. Such an event must have a beginning.

God bless,
jd
Yep, that is just one more reason why I don’t think energy could have always existed. Always means infinite and infiinity isn’t on my ruler or my stopwatch. 🙂
 
Yep, that is just one more reason why I don’t think energy could have always existed. Always means infinite and infiinity isn’t on my ruler or my stopwatch. 🙂
I’ve come in late to this fascinating discussion, but don’t understand the question, “could energy have always existed?” Does this ask if during the lifetime of the universe, there was a time when there was no energy? That energy was injected into the universe at some finite point in time? To me, it would seem that during the lifetime of the universe, energy must have always existed. How could it not have? What else is there to exist?

You might help me in my understanding. In regards to entropy, I think of it as a measure of the unavailability of energy to do work. Or maybe, the measure of incapacity to change. I feel that calling it a measure of disorder is actually a little bit misleading; of course it comes from the fact that to be available, energy must be ordered in a certain way. So when calling a messy room and an unmade bed entropic, the word entropy is really being used analogously, or maybe metaphorically. An unmade bed is unavailable for sleeping, because the covers are in the wrong order to cover you up. A messy room makes things hard to find, and you can’t find your socks. Even though your socks are there, they are unavailable and unusable because you can’t find them. Also like when my cousin’s wife poured his whiskey in the horse tank. It was all there, in the horse tank, but it was unavailable to him to get drunk. It was in the wrong order.

In the ‘heat death’ of the universe, there will still be all the energy there ever was, but irregularities of energy distribution will have been flattened out. Hence, there can be no flow of energy, no flow of energy to be used to do work. Nothing can change, because it is all the same.

I tend to agree with the idea that energy is a construct. After all, the idea of energy is something made up to stick into the equations to make them come out right. So, paradoxically, maybe it is true, energy didn’t always exist. It came into being when physicists constructed it to make equations balance!
 
I not trying to bypass a discussion, merely to illustrate a point. The line segment in this case represents time. The starting point is T0, and we can’t see the end yet. The “paper” doesn’t exist, so it seems like we are imagining that the paper exists, and then claiming that the starting point of our line segment was arbitrary (or even had motivation X).

God is infinitely intelligent because he has all knowledge (finite or infinite, but not zero) and the amount of time He acquired it in is zero (He is in the Eternal Now). Therefore, the rate of knowledge acquisition (intelligence) is infinite. In addition, God’s knowledge is prefect, that is to say everything He believes is true because it matches reality. Our knowledge does not always match up with reality.

BTW, the song reference to motivation and intelligence went right over my head.
That’s okay.

I believe that I’d attempted to address the issue of God’s motivation for creation, which was a mistake. That subject always gets turned obliquely by Catholics, as I turned it when I was. Sorry for even bringing up the question.
 
Yep, that is just one more reason why I don’t think energy could have always existed. Always means infinite and infiinity isn’t on my ruler or my stopwatch. 🙂
I thought that you believed in an infinite God.
 
Oh, no problem.

Sounds like you’re talking about arguments that sound like “evolution results in more information, which violates the 2nd Law”. In fact, these arguments have it exactly backwards.

We know that the entropy of a thermodynamic system is given by S = k[sub]B[/sub] lnΩ, where Ω is the number of available microstates corresponding to the macrostate. The Second Law states that for every real process, dS >/= 0, which necessarily means that the number of microstates available to the system has increased.

S is also equal to -k[sub]B[/sub] ∑(ρ[sub]i[/sub] lnρ[sub]i[/sub] ), in which, in information theory, the term -∑(ρ[sub]i[/sub] lnρ[sub]i[/sub] ) is called the information function and the symbol ρ denotes the probability of each microstate i.

You can see, then, that lnΩ = -∑(ρ[sub]i[/sub] lnρ[sub]i[/sub] ), in which case for every real process the information function of the system increases.

So when they say that evolution results in an increase in information, they are conceding that it does not violate the 2nd Law.
I wasn’t aware of the isomorphism between the information function and the number of micro states in the thermodynamic system, although I have used the information function in a different context, namely the estimation of joint probability functions of default events in financial markets!!! How’s that possible, hum?! Anyway, since, when lnΩ increases, -∑(ρ[sub]i[/sub] lnρ[sub]i[/sub]) increases by the same amount, that doesn’t say much about how the increase is attained. It isn’t through the extensive margin because there are more parcels; so it must be through the intensive margin (the rhos). Now, it is not clear why it can’t be the case that a certain micro state likelihood increases a lot (say, rho1 goes up), and this is compensated by a decrease of all other, now more numerous, micro states. In fact, an intelligent designer (as we humans) seems to do just that: when I sort out my son’s room, I consume energy, burn some brain cells and probably oxidate some of my cells in order to counter the natural process of my son’s keeping his room ever more untidy. So, although naturally the number of states would increase, that is, without intervention the possible combinations of yet more unordered objects in the room is always increasing, my intervention increases the odds that one of them actually occurs (the room is tidy) at the expense of the smaller odds that the unwanted states (the room is untidy in different, ever increasing ways) are observed. My intervention in the room is certainly not violating the 2nd law (because I paid a price when I sorted out the room), but the fact is the room is now tidy!

When the ID people contend, I presume (and I am not a expert on their reasoning), that the local order that we observe in biological systems is impossible because it violates the 2nd law, they seem to be wrong; but it is clear that we now have to take into account the odds of such events happening by pure chance. It is difficult to say they are small or large, given the possibility of the cosmos being actually much larger than what we think it is. In our own universe they are almost surely incredibly small. But not necessarily in one of trillions of trillions of … of parallel universes, all coming into existence at the same time, all with random laws. If it is true that our universe has a beginning (and most knowledgeable people think it has) and is unique (which is also the case), then, in my view, a Creator is absolutely needed. But even if there are many parallel universes, the question arises: how do they come into existence? It seems that meta-laws are needed to govern the random laws governing each universe, and one of them is certainly the meta-law that those laws (at least in our particular universe) should be permanent. If there wasn’t such law, Science would be hopeless, for instance. So, when do these meta-laws come into existence? They should be preexisting, but there’s a beginning - a contradiction. In my view, the only way to reconcile the absence of a Creator with our view of the cosmos is the possibility that time is unbounded backwards. While it is not counter the existence of a Creator (because it doesn’t seem conceptually very different the Creator creating a time line unbounded in both sides rather than, as when there is a beginning, bounded to the left and unbounded to the right), it solves at least the uncaused cause problem: you don’t need one because backward recursion never ceases. If there’s a beginning - be it a unique universe like most people think is ours or a cross-section of universes, all with a common beginning governed by random laws - then a Creator (not necessarily the Christian one) is needed.

The absence of a beginning, on the other hand, poses its own problems and seems today discarded. But who knows what happens next?
 
This is marginally off-topic, but it’s interesting, so I’ll proceed. In his review article “Philosophical Issues in Cosmology” (see forums.catholic-questions.org/showthread.php?p=7293197#post7293197
George Ellis makes the statement

The references are to one article I couldn’t access, and two books by Roger Penrose, “The Emperor’s New Mind” and “The Road to Reality”. In the latter, Penrose explores why the 2nd Law is valid, and concludes that it is puzzling, since there is a time symmetry in all the equations of physics. He further argues that entropy is increasing because at the very early life of the universe, it was in a highly ordered state (very low volume in phase space) and so what we see as the 2nd Law is just the evolution from that very small volume of phase space to a higher volume.
But he’s still puzzled.
Anselm
I have read somewhere that one of the first to propose that the universe might be expanding was someone who, upon repeating the same experiment over and over again and seing that there was some kind of hysteresis in it which could not be attributed to measurement error, he hypothesized that a possible explanation was the expansion of the universe. I can’t remember who it was. Boltzmann?
 
I wasn’t aware of the isomorphism between the information function and the number of micro states in the thermodynamic system, although I have used the information function in a different context, namely the estimation of joint probability functions of default events in financial markets!!! How’s that possible, hum?! Anyway, since, when lnΩ increases, -∑(ρ[sub]i[/sub] lnρ[sub]i[/sub]) increases by the same amount, that doesn’t say much about how the increase is attained. It isn’t through the extensive margin because there are more parcels; so it must be through the intensive margin (the rhos). Now, it is not clear why it can’t be the case that a certain micro state likelihood increases a lot (say, rho1 goes up), and this is compensated by a decrease of all other, now more numerous, micro states…
Not having any background in financial markets I had to look up the definitions of extensive and intensive margins. I’m not sure that you can validly apply those concepts to thermodynamics, but I don’t know how to translate it from the language of economics to the language of physics so certainly I could be wrong.

In thermodynamics, for a given macrostate the probability of any one of the corresponding microstates is a constant.
In fact, an intelligent designer (as we humans) seems to do just that: when I sort out my son’s room, I consume energy, burn some brain cells and probably oxidate some of my cells in order to counter the natural process of my son’s keeping his room ever more untidy. So, although naturally the number of states would increase, that is, without intervention the possible combinations of yet more unordered objects in the room is always increasing, my intervention increases the odds that one of them actually occurs (the room is tidy) at the expense of the smaller odds that the unwanted states (the room is untidy in different, ever increasing ways) are observed. My intervention in the room is certainly not violating the 2nd law (because I paid a price when I sorted out the room), but the fact is the room is now tidy!..
The issue here is that when you use the word order to indicate the neatness of the room you’re not using it in a thermodynamic sense. For purposes of 2nd Law analysis, entropy is a measure of order only for a very limited definition of the word order, and it has nothing to do with the fact that the socks are in the drawers and the vases are on the shelves.

If you’re interested in a further discussion, you can follow this link to a thread I started at another forum site (over there I’m known as chilehed). christianforums.com/t2558054/

Oh, and ignore the part at the end about information, I had that part messed up at the time. I was confusing information with the act of mapping patterns to meaning.
 
I’ve come in late to this fascinating discussion, but don’t understand the question, “could energy have always existed?” Does this ask if during the lifetime of the universe, there was a time when there was no energy? That energy was injected into the universe at some finite point in time? To me, it would seem that during the lifetime of the universe, energy must have always existed. How could it not have? What else is there to exist?
As I see it, it’s more of a question of whether the universe has an eternal past. For Big Bang people, it is the question of what the universe looked like before the Big Bang. We have been referring to the start time of the known universe as T0. After T0, we assume some finite length of time occurred in which the stars and galaxies formed into the state which we know them today. The discussion focuses on beliefs and thought experiments about whether something (energy in any form - matter, heat, whatever) existed for an infinite length of time before T0.
You might help me in my understanding. In regards to entropy, I think of it as a measure of the unavailability of energy to do work. Or maybe, the measure of incapacity to change. I feel that calling it a measure of disorder is actually a little bit misleading; of course it comes from the fact that to be available, energy must be ordered in a certain way. So when calling a messy room and an unmade bed entropic, the word entropy is really being used analogously, or maybe metaphorically. An unmade bed is unavailable for sleeping, because the covers are in the wrong order to cover you up. A messy room makes things hard to find, and you can’t find your socks. Even though your socks are there, they are unavailable and unusable because you can’t find them. Also like when my cousin’s wife poured his whiskey in the horse tank. It was all there, in the horse tank, but it was unavailable to him to get drunk. It was in the wrong order.

In the ‘heat death’ of the universe, there will still be all the energy there ever was, but irregularities of energy distribution will have been flattened out. Hence, there can be no flow of energy, no flow of energy to be used to do work. Nothing can change, because it is all the same.
Yes, you seem to have a good understanding of entropy. I avoid “messy room” discussions whenever possible. What I was saying before is that we could not exist today if our universe is a closed system and sometime (all the time) before T0 looked like the ‘heat death’ of the universe.
I tend to agree with the idea that energy is a construct. After all, the idea of energy is something made up to stick into the equations to make them come out right. So, paradoxically, maybe it is true, energy didn’t always exist. It came into being when physicists constructed it to make equations balance!
An interesting way to look at things, and perfectly valid. For this discussion, we’re discussing the real thing that we currently represent by the word “energy”. Just like in other languages the same real thing is referred to by using different words, we are all referring to the same reality that can be observed.
 
That’s okay.

I believe that I’d attempted to address the issue of God’s motivation for creation, which was a mistake. That subject always gets turned obliquely by Catholics, as I turned it when I was. Sorry for even bringing up the question.
Oh, I’m sorry, I must have misunderstood your question. God’s motivation for creation is best addressed in some other thread (perhaps there already is one or several?). I was just saying that we couldn’t declare His motivation arbitrary, capricious, or even clever because of His placement of space (or time) within a (possibly non-existent) larger space (or time).
 
For purposes of 2nd Law analysis, entropy is a measure of order only for a very limited definition of the word order, and it has nothing to do with the fact that the socks are in the drawers and the vases are on the shelves.

If you’re interested in a further discussion, you can follow this link to a thread I started at another forum site (over there I’m known as chilehed). christianforums.com/t2558054/
As for order, of course the tidiness of the room was just, I would say, a metaphor. (You know, stuff in the room are gas particles; my son is time; and I am, for instance, the guy who compresses the gas back to the original volume.) But I agree that it is a bit misleading, and I also agree that the 2nd law is never violated even locally. Anyway, thanks for the interesting link.
 
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