John wrote:We propose to term happenings which turn against the trend towards increasing entropy, ‘disentropic’ ~ Alfred Ubbelohde, Professor of Chemistry, Belfast 1947
We've heard from
Crick, the guy who won the Nobel Prize for discovering the structure of DNA, about how life was a 'almost a miracle', given what he knew about thermodynamics: "An honest man, armed with all the knowledge available to us now, could only state that in some sense, the origin of life appears at the moment to be almost a miracle, so many are the conditions which would have had to have been satisfied to get it going." F. Crick. Scientists don't often use the word 'miracle'. This alone should give us some pause. Every researcher knows tacitly that he'll never get a Nobel Prize if he uses a word like 'miracle'. Look what they did to Hoyle. Crick must've already had his prize by this time, I'd be willing to bet.
We've heard this from Schrodinger:"In the famous 1944 book
What is Life?, Nobel-laureate physicist Erwin Schrödinger theorizes that life, contrary to the general tendency dictated by the Second law of thermodynamics, decreases or maintains its entropy by feeding on negative entropy. ~Wiki
First, quoting famous guys who have an opinion on this means nothing. Famous people's opinions without evidence are meaningless. Science doesn't work by authority. A Nobel prize doesn't make you an authority, it means you have demonstrated convincing evidence of a theory, that's all. I could quote quite a huge number of Nobel Prize winners who disagree with these guys. But even that doesn't matter. What matters is the evidence. And there's no evidence for biological processes going against entropy. If there were, I'm sure there'd be a Nobel Prize for demonstrating that.
Your misunderstanding seems rooted in this idea:
As I've established here, quite thoroughly, cellular metabolic processes are disentropic; these processes concentrate potential energy in apparent defiance of the Second Law of Thermodynamics. A close reading of the 2nd Law reveals that spontaneous natural processes are only required to be entropic on average, over time. This rule of nature, the "Law of Entropy" does not expressly prohibit the possibility of local disentropic processes.
In the first place, you have not demonstated any defiance of entripy in any cellular metabolic process. What on earth are you talking about? Which cellular metabollic process defies entropy? You seem to think that "concentrating energy" is some kind of defiance of entropy, rather than a part of the theory. What you seem to be referring to in this "concentration of energy" that occurs in nature is simply what are called "endothermic reactions" - reactions that require an energy input to accomplish, that suck energy out of heat and put it into something like a chemical bond, or a nuclear bond, or gravitational potential. But there's nothing disentropic about that. Endothermic reactions are entropic, just as exothermic reactions are. All reactions are entropic, even reversible ones. Heat and energy disippate in the process, without exception.
Endothermic reactions do NOT "go against the trend of the 2nd law". Nor are they unanticipated by the 2nd law. The theory of entropy was developed until the mid to late 19th century, well after endothermic reactions had been noticed and studied in great detail. So the 2nd law was conceived of with precisely these kinds of reactions in mind. Ot explains how endothermic reactions always increase entropy, even as they store energy. Any process by which one stores or transfer energy is entropic, without any known exceptions. No cellular metabolic process violates this, even endothermic ones that require an input of energy, such as the production of sugars through photosynthesis.
The Law of Entropy clearly states: Overall the Universe is entropic. This means that whenever any energetic exchange takes place in the Universe, some of the potential energy that is unleashed will be lost as unrecoverable, 'useless' kinetic energy (heat).
FIrst of all, heat is not "useless energy". Steam engines and nuclear reactors create heat to do very useful work. The radiant heat from the sun is not useless at all, it's what makes life on earth possible. But it is true that one will not have as much energy overall to do further work with.
To illustrate with a simple example: imagine you turn on the stove to cook some carrots. The heat that cooks the carrots is doing the 'useful' work of cooking the carrots. This heat was bound up in the potential energy of the fuel and was liberated when the fuel was burned to power the stove, either locally or at the power plant. However some of the heat that was liberated from the fuel will be lost to the environment, this 'useless' energy cannot generally be recovered and according to the 2nd Law, some portion of it can never be recovered; no way, no how. This 'lost' energy is known as entropy, and according to the 2nd Law, all natural energetic interactions that tap any kind of potential energy from Nature will always add some net entropy to the Universe.
So far, so good. But then you run into this whopper:
Yet, as we've seen, novel processes exist that seem to defy the odds, they concentrate potential energy and reduce entropy locally.
First of all, nothing about endothermic reactions "defy the odds". They are not rare feats of randomness that somehow has one part of a room heat up because all the fast molecules happen to go to the right, and all the slow molecules end up on the left, by sheer chance. Endothermic reactions are perfectly predictable by the laws of nature. They are an intrinsic part of the laws of nature. A huge number of chemical reactions are endothermic. Living systems make use of both endothermic reactions and exothermic reactions, as do non-living systems. Nothing about that "defies the odds". It's like saying that basic chemistry defies the odds of thermodynamics, when it obeys those laws perfectly, including endothermic reactions.
I suppose what you are trying to get at is that in a universe in which there was no chemistry, in which nuclear reactions did not occur, in which there was no gravity, no electromagnetism, not strong or weak force, just motion and heat, in which there was only the initial heat of the big bang, you would get some kind of perfect entropic process, whereby the heat of the big bang would simply even out over time such that there was no discontinuity. But we don't live in a universe like that. We live in a universe in which there are all kinds of complex possibilities, complex reactions, complex ways in which energy can be moved about, stored, create reactions, store energy, etc. The law of entropy states that all that action and reaction will always reduce the overall available energy to do work. The heat will dissipate to the degree that it can. But it will not dissipate perfectly, as it would in a universe that had no chemical or nuclear reactions or gravity. Instead, as it dissipates, it will fall into various states along the way through the laws that govern those reactions. All of those reactions obey the 2nd law however, and all of those states lose available energy in one respect or another.
In the overall energy balance of the Universe, these anomolous processes do not impact the validity of the 2nd Law, they represent a truly puny portion of the energy out there.
First of all, endothermic reactions are not anomalous. They are incredibly common. All reversible reactions mean that there's an exothermic and endothermic reaction possible. You can put energy into a chemical bond by building a sugar, and you can get energy back out by burning that sugar molecule, and then you can take the heat from that burning and build more sugar molecules out of it, and repeat. The problem is, you lose energy at every step of the way, and so your ability to keep reversing this process is limited. That's entropy. You lose the ability to extract energy from heat and do work with the system. Nothing about either side of that process is anomalous. Both the endothermic reaction of producing sugar molecules and the exothermic process of burning them obeys the law of entropy. No anomaly is present in this process.
The overall entropy of the Universe is going up all the time, despite these novel processes. Entropy still rules overall. Over time the Universe is still headed for
"
Yes, this is true, except that these are not "novel" processes at all. Every reversible reaction has an endothermic and exothermic side to it. You can fuse nuclei heavier than iron by putting energy into the nuclear bonds. You can get it back out by fission. Both of those reactions are entropic. Neither go against the trend of the 2nd law. There are no "local violations" of the second law, because entropy only applies to systems, not to parts of systems. That's like saying that you can locally violate the law of the conservation of mass-energy. Well, duh. It's meaningless, in other words, because the very concept of entropy only applies to a system, not to components within a system. Which means that moving heat energy into a chemical bond does not in any way violate or go against the trend of the 2nd law, since that is accounted for in the theory of entropy from the start.
Lord Kelvin, who discovered the 2nd Law, which he called the 'principle of universal dissipation of energy', said this about his theory:
The result [of this trend] would inevitably be a state of universal rest and death, if the universe were finite and left to obey existing laws. But it is impossible to conceive a limit to the extent of matter in the universe; and therefore science points rather to an endless progress, through an endless space, of action involving the transformation of potential energy into palpable motion and hence into heat, than to a single finite mechanism, running down like a clock, and stopping for ever"
Lord Kelvin did not have knowledge of nuclear physics or astrophysics, and famously said that Darwinian evolution was impossible because the sun could only provide enough energy for about 300,000 years before burning out, thus not giving enough of a timescale for evolution to work. You keep quoting people from long ago who are unfamiliar with modern science to make points that are irrelevant to our debate.
This is where the speculative hypothesis of abiogenesis runs into a brick wall. If the natural trend of the Universe is to run down potential energy toward dissipation as useless heat, then it's not possible for disentropic processes to arise spontaneously from disordered matter.
This is probably the heart of your entire argument, and it's obvious nonsense. All biological processes, whether they are endothermic or exothermic, run down the potential energy of the system and dissipate it into more and more heat-loss. One can play that old "in and out" game of going from endothermic to exothermic back to endothermic and on and on, but the energy continues to dissipate at every step of the way. That it doesn't entirely dissipate instantly, but cycles back and forth, is not going "against the trend". It merely slows the process down, since each step of the cycle goes in the same direction. That's why the universe is an interesting place, so to speak, as opposed to a universe in which no reactions took place, in which heat just dissipated away by random molecular action.
In other words, whereas cellular metabolism can be reconciled with 'overall average' entropy of the Universe going up, abiogenesis violates the principle of the 2nd Law of Thermodynamics.
Well of course this is nonsense. Abiogenesis merely says that there are endothermic and exothermic reactions in nature which can build complex molecules and naturally create living systems that way. It does not in any way require any violation of the second law, either in principle or in practice. Endothermic and exothermic reactions take place all over the universe. Nuclear reactions in stars are built upon a combination of endothermic and exothermic reactions. But they always lose heat in the process, which is why stars radiate light. The exothermic side of the reaction tends to lose more energy than the endothermic side can capture. That's why all chemistry is entropic. And nuclear reactions operate by the same principles.
The assertion that abiogenesis took place over millions of years only makes it less likely to have happened, not more. This is precisely because the 2nd Law is a rule that specifically applies to statistical averages, as we've noted.
Again, that's meaningless, in that life is not said by abiogenesis to be a truly random process, but one which makes use of the basic endothermic and exothermic possibilities of organic chemistry to produce, over time, complex molecules which can go through repeated and reversible reactions which eventually create molecules which can reproduce themselves by making use of these endothermic and exothermic reactions. Nothing in any of that defies the odds, because they are no odds against endothermic reactions occurring. It would defy the odds if they didn't occur. They are perfectly normal and natural and occur all the time everywhere.
When a fair coin is flipped once, the expected value of the number of heads is equal to one half. Therefore, according to the law of large numbers, the proportion of heads in a large number of coin flips should be roughly one half. In particular, the proportion of heads after n flips will almost surely converge to one half as n approaches infinity.
By that same token, approximately half of all chemical reactions should be endothermic rather than exothermic. Which means there's nothing anomalous about them.
Anyone familiar with the 2nd Law of Thermodynamics should see that the process of Abiogenesis is indeed quite impossible under any conceivable natural conditions, and that the processes of Photosynthesis and Nucleosynthesis are indeed quite improbable. Keep in mind how these processes affect us; we're all composed of stardust that was and is created by nucleosynthesis, we all survive on hydrocarbons that were created by photosynthesis. Yet these processes are both bucking the trend in a dissapative, expanding Universe. This is the supernatural miracle of creation. Oh shit, why did I use that word? There go my chances for the nobel prize.
The reason why hasn't won anyone the Nobel Prize is that it's obvious nonsense to anyone remotely familiar with chemistry, thermodynamics, and biology. As mentioned before, our particular universe is highly improbable, in that for things to work out exactly this way requires that all the coin flips worked out a certain way. But that doesn't mean our universe couldn't have occurred except by a miracle. It just means that it's unlikely ever to be repeated. Some kind of chemical reactions were inevitable, given the universe we started out with, and we have no idea how unlikely life was unless we run the experiment multiple times, and see how many times life forms. I'd say that odds are the life forms on earth, given its initial conditions, most of the time. But I'm just guessing. I don't see any reason why it shouldn't form by purely natural law, or why it needs some kind of special miracle to keep going. The miracle is that anything exists at all. Once that's happened, the rest is just nature.
Now let's here some more uninformed blowback from the 'competative-mud' morons.

In the first place, abiogenesis is not about "mud", since mud is composed of mostly silicone dioxide. Abiogenesis is about life arising from the ocean, from chemicals dissolved in water, which is the ancient symbol for consciousness. The miracle of life forming by abiogenesis is just as wondrous and beautiful as any notion of God reaching down to touch a piece of mud and turn it into a man. I would say even more so, since it gives nature the great and wondrous power of life, rather than taking it away from nature and giving it to something apart form this world. Your view of nature is actually very dismal, as if nature is a dead and lifeless, spiritless place that is only made meaningful by some outside force coming into the picture. I would call that a moronic viewpoint about nature, to be honest. It's certainly not a spiritual view of nature. In my view, nature is so imbued with spirit that its very laws of chemistry and physics produce life spontaneously, from it's own manifest material. It doesn't need "outside" help, because matter is also spirit.