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Theme Changer

 Topic: The Fine Tuning Argument

 (Read 13282 times)
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  • The Fine Tuning Argument
     OP - April 15, 2011, 03:10 AM

    This was split from the Atheist Censorship topic.

    @Osman

    It makes atheists doubt. And I didn't say that the argument was flawless, simply that it had some force to it.

    Zeb, I'd better explain why the fine tuning argument is so trivial, IMO.

    Stating the problem in its most elementary form: unless you can demonstrate that the universe we have is less likely than a range of alternatives, there is no way to assert that there is anything unlikely about this universe. Since nobody has yet managed to demonstrate that this universe is less likely than a range of alternatives, the so-called "fine tuning argument" is reduced to nothing more interesting than a stoned hippy saying "Wow man, this is like totally awesome."

    While I am happy to agree that this (universe) is indeed totally awesome, I do not think that this is anything even remotely like a forceful argument. IMHO, it is hardly even worth dignifying by calling it an argument, unless you wish to elevate argument from personal emotion above other forms of argument.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #1 - April 15, 2011, 11:44 AM

    @Osman

    Zeb, I'd better explain why the fine tuning argument is so trivial, IMO.

    Stating the problem in its most elementary form: unless you can demonstrate that the universe we have is less likely than a range of alternatives, there is no way to assert that there is anything unlikely about this universe. Since nobody has yet managed to demonstrate that this universe is less likely than a range of alternatives, the so-called "fine tuning argument" is reduced to nothing more interesting than a stoned hippy saying "Wow man, this is like totally awesome."

    While I am happy to agree that this (universe) is indeed totally awesome, I do not think that this is anything even remotely like a forceful argument. IMHO, it is hardly even worth dignifying by calling it an argument, unless you wish to elevate argument from personal emotion above other forms of argument.


    The way I understand it, this universe is, according to the argument, a lot less likely than alternatives because the natural laws and constants are configured in such a precise way (that allows life to exist, etc.) that it would be far more likely for them to be configured differently, because it is certainly possible that they be different, and that the universe not be life permitting. And so, given the improbability that even one constant be so precise as it is, (and required to be this way for life to exist), the improbability of all these necessary constants being precisely the way they are, and need to be, makes design far more probable than mere chance arrangement.
  • Re: The Fine Tuning Argument
     Reply #2 - April 15, 2011, 11:53 AM

    @Osman

    The way I understand it, this universe is, according to the argument, a lot less likely than alternatives because the natural laws and constants are configured in such a precise way (that allows life to exist, etc.) that it would be far more likely for them to be configured differently, because it is certainly possible that they be different, and that the universe not be life permitting. And so, given the improbability that even one constant be so precise as it is, (and required to be this way for life to exist), the improbability of all these necessary constants being precisely the way they are, and need to be, makes design far more probable than mere chance arrangement.


    Is it really that precise though? And we (as a race) have had to struggle in order to make it even this far. To say that this universe or earth is perfectly configured for life is not wholly accurate imo. I’ll give it “functional”. Doesn’t make existence any less amazing though.  
  • Re: The Fine Tuning Argument
     Reply #3 - April 15, 2011, 12:38 PM

    @Blackdog

    Is it really that precise though? And we (as a race) have had to struggle in order to make it even this far. To say that this universe or earth is perfectly configured for life is not wholly accurate imo. I’ll give it “functional”. Doesn’t make existence any less amazing though.  


    Yes, it is claimed to be more precise, and a more fundamental kind of fine-tuning than that. I'll dig out Reasonable Faith which explains it better than I can.

    We can cite various examples of cosmic fine-tuning. The world is conditioned principally by the values of the fundamental constants α (the fine-structure constant, or electromagnetic interaction), αG (gravitation), αW (the weak force), αS (the strong force), and mN/mE (the ratio between the mass of a proton and the mass of an electron). When one assigns different values to these constants or forces, one discovers that the proportion of observable universes, that is to say, universes capable of supporting intelligent life, is shockingly small. Just a slight variation in some of these values would render life impossible. For example, according to the physicist P. C. W. Davies, changes in either αG or αW in only one part in 10 to the power of 100 would have prevented a life-permitting universe.

    In investigating the initial conditions of the Big Bang, one also confronts two arbitrary parameters governing the expansion of the universe: Ω0, related to the density of the universe, and H0, related to the speed of the expansion. Observations indicate that at 10 to the power of -43 second after the Big Bang the universe was expanding at a fantastically special rate of speed with a total density close to the critical value  on the borderline between recollapse and everlasting expansion. Stephen Hawking estimates that a decrease in the expansion rate of even one part in a hundred thousand million million one second after the Big Bang would have resulted in the universe's recollapse long ago; a similar increase would have precluded the galaxies' condensing out of the expanding matter...

    As we have seen, Oxford physicist Roger Penrose calculates that the odds of the special low entropy condition having arisen sheerly by chance in the absence of any constraining principles is at least as small as about one part in 10 to the power of 10(123) in order for our universe to exist.
    -- WLC, Reasonable Faith, p. 158

    Don't say I'm not good to ya  Afro
  • Re: The Fine Tuning Argument
     Reply #4 - April 15, 2011, 10:28 PM

    @Osman

    The way I understand it, this universe is, according to the argument, a lot less likely than alternatives because the natural laws and constants are configured in such a precise way (that allows life to exist, etc.) that it would be far more likely for them to be configured differently, because it is certainly possible that they be different, and that the universe not be life permitting. And so, given the improbability that even one constant be so precise as it is, (and required to be this way for life to exist), the improbability of all these necessary constants being precisely the way they are, and need to be, makes design far more probable than mere chance arrangement.

    You have to understand that the fine tuning argument is not a philosphical argument per se. It is purely and simply a mathematical argument that has been co-opted for other purposes. A lot of people don't have an intuitive feel for mathematics, and I suspect this is the reason the fine tuning argument is sometimes seen as having more validity than it really warrants. If you don't have a clear, qualitative grasp of the relevant mathematical concepts you will never have any way of assessing the strengths and weaknesses of the argument.

    Note that I say qualitative, because a quantative grasp is both unnecessary and impossible. This is the Achilles' Heel of the fine tuning argument: you have no way of assigning greater or lesser probabilities to other alternative universes. There may well be seventy five gazillion possible alternative universes, but that doesn't make any difference. Don't get dazzled by big numbers. They're no more intrinsically magical than a little number like two.

    If there are (for argument's sake) seventy five gazillion possible alternative universes then, without any extra information that would enable us to claim otherwise, the probability of this universe existing would be one in seventy five gazillion. That might seem vanishingly unlikely and impressive. However, the probability of any other universe existing would also be one in seventy five gazillion. There's no difference at all. Our universe is just as likely or unlikely as the rest of them.

    It's not important that there is a miniscule probability of our particular universe existing if the probability of any other particular universe existing is exactly the same.

    Yes, the constants in our universe are configured in such a way that we can exist. This should not be surprising, because we have evolved to suit our universe. We are a product of it. We are not the cause of it.

    This still does not mean that our universe's arrangement of constants is any less likely than any other arrangement. To make that claim you would need some outside evidence that demonstrates that our arrangment is less likely, and you don't have any. This means we are back to stoned hippies. Smiley


    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #5 - April 16, 2011, 12:37 AM

    @Osman

    Quote
    you have no way of assigning greater or lesser probabilities to other alternative universes. There may well be seventy five gazillion possible alternative universes, but that doesn't make any difference.


    Quote
    It's not important that there is a miniscule probability of our particular universe existing if the probability of any other particular universe existing is exactly the same.


    No. You're talking about just the existence of other universes, that's not the issue. The issue is the existence of life-permitting universes, and their extreme improbability compared to life-prohibiting universes. The probabilities are not equal.

    I'll repost the earlier quote that explains it.

    Quote
    This still does not mean that our universe's arrangement of constants is any less likely than any other arrangement.


    Quote
    Yes, the constants in our universe are configured in such a way that we can exist. This should not be surprising, because we have evolved to suit our universe. We are a product of it. We are not the cause of it.


    It is not as simple as that. The laws and constants, expansion rate, weak force, strong force, etc., are configured in such a way that if they were different by even an infinitesimal degree, even the basic chemicals that are necessary for life to form wouldn't exist. Indeed, the universe itself wouldn't. See the bold parts:

    Quote
    We can cite various examples of cosmic fine-tuning. The world is conditioned principally by the values of the fundamental constants α (the fine-structure constant, or electromagnetic interaction), αG (gravitation), αW (the weak force), αS (the strong force), and mN/mE (the ratio between the mass of a proton and the mass of an electron). When one assigns different values to these constants or forces, one discovers that the proportion of observable universes, that is to say, universes capable of supporting intelligent life, is shockingly small. Just a slight variation in some of these values would render life impossible. For example, according to the physicist P. C. W. Davies, changes in either αG or αW in only one part in 10 to the power of 100 would have prevented a life-permitting universe.

    In investigating the initial conditions of the Big Bang, one also confronts two arbitrary parameters governing the expansion of the universe: Ω0, related to the density of the universe, and H0, related to the speed of the expansion. Observations indicate that at 10 to the power of -43 second after the Big Bang the universe was expanding at a fantastically special rate of speed with a total density close to the critical value  on the borderline between recollapse and everlasting expansion. Stephen Hawking estimates that a decrease in the expansion rate of even one part in a hundred thousand million million one second after the Big Bang would have resulted in the universe's recollapse long ago; a similar increase would have precluded the galaxies' condensing out of the expanding matter...

    As we have seen, Oxford physicist Roger Penrose calculates that the odds of the special low entropy condition having arisen sheerly by chance in the absence of any constraining principles is at least as small as about one part in 10 to the power of 10(123) in order for our universe to exist. -- WLC, Reasonable Faith, p. 158


    People who work with numbers, physicist themselves, acknowledge this apparent 'fine-tuning.' But in any case it's clear that our universe and the configuration of its laws and constants are not equal in probability to that of any other, because every single constant and law is precisely what it has to be in order for life to be able to form, and indeed there is a vast number of alternatives which could easily have been, but are not. Alternatives that would preclude the existence of life.

    I don't even really agree with the argument, and in fact it has at least one fatal flaw that I can think of, but the subject of the universe's apparent fine-tuning is an important one, and it can't be flippantly dismissed as an attempt to woo the plebs with big numbers, hence why even physicists try to explain it with things like multiverses and so on.
  • Re: The Fine Tuning Argument
     Reply #6 - April 16, 2011, 02:59 AM

    @Osman

    No. You're talking about just the existence of other universes, that's not the issue. The issue is the existence of life-permitting universes, and their extreme improbability compared to life-prohibiting universes. The probabilities are not equal.

    I am perfectly aware of what the issue is. You are getting confused. You still haven't got the basic concept straight.

    Yes, if there are seventy five gazillion possible universes, and if only ten million of those could support any kind of sentient life, then the probability of a universe occurring with the capacity to support sentient life is far, far lower than the probability of a universe that cannot support life. I know that. The critical point is that all of them have exactly the same probability of occurring, and therefore the occurrence of one of them is not at all noteworthy in terms of probability.

    Here's something about probability that many people do not get: let's say you are playing poker. You'd know that the probability of a royal flush turning up is a hell of a lot lower than the probability of a basic two of a kind hand. You'd be quite correct about this too. However, probability calculations of this type only predict the average occurrence over a very large sample size (preferably infinitely large if you want real accuracy). They do not predict when and where each possibility will occur. That is entirely random.

    The probability of a royal flush turning up in any particular hand cannot really be calculated. You can calculate that, for a very large number of hands, a royal flush will turn up X amount of times. You cannot tell from this how likely it is that, in reality, a royal flush will turn up in the next hand. Although it may seem completely counterintuitive, you are just as likely to get a royal flush in that particular hand as you are to get a basic two of a kind in that particular hand.

    Now, if you get a royal flush you will probably regard it as A Significant Event. You will probably regard it as far more significant than two of a kind. This is just an emotional reaction, though. In terms of probability, a royal flush is not a significant event.

    Quote
    I'll repost the earlier quote that explains it.

    That does nothing to help your case. Smiley

    Quote
    It is not as simple as that. The laws and constants, expansion rate, weak force, strong force, etc., are configured in such a way that if they were different by even an infinitesimal degree, even the basic chemicals that are necessary for life to form wouldn't exist. Indeed, the universe itself wouldn't. See the bold parts:

    People who work with numbers, physicist themselves, acknowledge this apparent 'fine-tuning.' But in any case it's clear that our universe and the configuration of its laws and constants are not equal in probability to that of any other, because every single constant and law is precisely what it has to be in order for life to be able to form, and indeed there is a vast number of alternatives which could easily have been, but are not. Alternatives that would preclude the existence of life.

    And that still does nothing to change the probability of any one of those alternatives, including our unvierse, actually occurring. They are still all equally probable.

    Quote
    I don't even really agree with the argument, and in fact it has at least one fatal flaw that I can think of, but the subject of the universe's apparent fine-tuning is an important one, and it can't be flippantly dismissed as an attempt to woo the plebs with big numbers, hence why even physicists try to explain it with things like multiverses and so on.

    Yes, it can be dismissed like that. Physicists do not postulate multiverses just because they don't understand probability and are freaked out by apparently impressive arguments that have no real substance.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #7 - April 16, 2011, 03:10 AM

    Zeb, that quote you posted and bolded parts of is a very good example of a common tactic among religious apologists. It's known as "quote mining", meaning you take a covenient small snippet out of someone's work and present it as if it supports your conclusion, when if you were to use a more comprehensive sample of that person's views they would not support your conclusion. Sure, Penrose et al have done some calculations and come up with various estimates of various probabilities. If you wish to use this to support the fine tuning argument you now have to do two things.

    First: show that the people who did these calculations actually think that the calculations add weight to the fine tuning argument. Second, show that the calculations are demonstrably solid. In the case of hypothetical universes any calculations are like to be very rough estimates at best.

    ETA: I should clarify that this is what you would have to do if you wished to claim that Penrose et al thought the fine tuning argument had any validity as evidence of design, and that their views were at least vaguely supportable. Even if you could do that though, it still wouldn't solve the fundamental problem.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #8 - April 16, 2011, 03:22 AM

    osmanthus, I think Penrose is of the opinion that the early state of the universe is extremely unlikely. I believe he says this in his own book 'The Emperor's New Mind' (I can't seem to find the relevant passage right now but I can take a look) and is quoted by Huw Price having said the same as well in Price's book 'Time's Arrow'.
    However, I don't think his use of those figures are related to the question of fine-tuning but rather to the problem of entropy and why the universe was in such a a low state of entropy at its beginning compared to what it should have been if we take a block-universe view. (It's quite a tangent, but if you want I can expound on the problem).

    At evening, casual flocks of pigeons make
    Ambiguous undulations as they sink,
    Downward to darkness, on extended wings. - Stevens
  • Re: The Fine Tuning Argument
     Reply #9 - April 16, 2011, 03:44 AM

    Let's skip the tangents for now, unless you want to open another thread about it. What I am trying to get across to Zeb is that people who like to claim the fine tuning argument is evidence of design are making one crucial and utterly basic mistake: they are trying to extrapolate from a sample size of one and pretend that this is statistically significant. It is not, as anyone who works with statistics can tell you. That people try this sort of extrapolation and believe it to be significant simply shows that they do not understand the basic concept.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #10 - April 16, 2011, 04:01 AM

    Oh and regarding The Emperor's New Mind - I actually bought a copy of it when it was first published. There is a lot about it that I can't remember, since IIRC it's been over thirty years since I read it (can't remember exactly when it was released). I can tell you two things about it though. First is that by now it would have to be well out of date regarding the frontiers of physics. Second is that even at the time, a lot of Penrose's points were regarded as highly speculative and not all that supportable. There was a lot of solid information in it but also quite a bit of musing.

    ETA: BTW, that reminds me of more favourite tactics of religious apologists. When they want to claim that their position has "scientific support" they often quote informal publications rather than actual scientific papers, and they quote publications (formal or informal) that are out of date as well.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #11 - April 16, 2011, 02:29 PM

    I am perfectly aware of what the issue is. You are getting confused. You still haven't got the basic concept straight.

    Yes, if there are seventy five gazillion possible universes, and if only ten million of those could support any kind of sentient life, then the probability of a universe occurring with the capacity to support sentient life is far, far lower than the probability of a universe that cannot support life. I know that. The critical point is that all of them have exactly the same probability of occurring, and therefore the occurrence of one of them is not at all noteworthy in terms of probability.

    Here's something about probability that many people do not get: let's say you are playing poker. You'd know that the probability of a royal flush turning up is a hell of a lot lower than the probability of a basic two of a kind hand. You'd be quite correct about this too. However, probability calculations of this type only predict the average occurrence over a very large sample size (preferably infinitely large if you want real accuracy). They do not predict when and where each possibility will occur. That is entirely random.

    The probability of a royal flush turning up in any particular hand cannot really be calculated. You can calculate that, for a very large number of hands, a royal flush will turn up X amount of times. You cannot tell from this how likely it is that, in reality, a royal flush will turn up in the next hand. Although it may seem completely counterintuitive, you are just as likely to get a royal flush in that particular hand as you are to get a basic two of a kind in that particular hand.

    Now, if you get a royal flush you will probably regard it as A Significant Event. You will probably regard it as far more significant than two of a kind. This is just an emotional reaction, though. In terms of probability, a royal flush is not a significant event.
    That does nothing to help your case. Smiley


    I like to put it like this. I could write a number with 10,000 digits (the number would be far and away greater than the no. of atoms in the observable Universe, no?). The chances of me picking that particular number are 1 in 10^10000, yet even with such tiny odds there was no concious intent required. We would of course, be far more impressed by someone picking a pre-chosen number, but unless I'm mistaken the odds don't vary. ( Huh?)

    My biggest problem with the argument is that it's far too chauvinistic. We don't know what else a Universe is capable of, we don't even know what other wonders exist in this one. Must we insist on judging the quality of a Universe by its ability to harness life as we know it?

    And I believe Steven Weinberg, in particular, isn't convinced that there is much fine-tuning at all. AFAIK, he accepts the existence of just the one finely-tuned physical phenomenon.
  • Re: The Fine Tuning Argument
     Reply #12 - April 16, 2011, 04:02 PM

    People don't know shit about physics and think quoting a book and throwing some random words around makes them en expert. The fine tuning argument is silly, when you take into consideration probability, and the immense sizes we are talking about, and not to mention multiple/parallel universes. 

    "When one is dealt a bridge hand of thirteen cards, the probability of being dealt that particular hand is less than one in 600 billion. Still, it would be absurd for someone to be dealt a hand, examine it carefully, calculate the probability of getting it is less than one in 600 billion, and then conclude that he must not have been dealt that very hand because it is so very improbable."  - John Allen Paulos

  • Re: The Fine Tuning Argument
     Reply #13 - April 17, 2011, 01:16 AM

    @Osman

    It's not often I find myself defending the fine-tuning argument! But just for shits 'n' giggles:

    Quote
    Yes, if there are seventy five gazillion possible universes, and if only ten million of those could support any kind of sentient life, then the probability of a universe occurring with the capacity to support sentient life is far, far lower than the probability of a universe that cannot support life. I know that. The critical point is that all of them have exactly the same probability of occurring, and therefore the occurrence of one of them is not at all noteworthy in terms of probability.


    The problem, as I see, is not just the matter of unlikely universes, but also the high improbability of each and every one of the required constants being what they need to be too. It's not just a matter of one equally unlikely universe, but rather, every single required constant in that universe being precisely what it needs to be despite the immense improbability of each one.

    Quote
    The probability of a royal flush turning up in any particular hand cannot really be calculated. You can calculate that, for a very large number of hands, a royal flush will turn up X amount of times. You cannot tell from this how likely it is that, in reality, a royal flush will turn up in the next hand. Although it may seem completely counterintuitive, you are just as likely to get a royal flush in that particular hand as you are to get a basic two of a kind in that particular hand.


    I think it's quite dubious to compare something like the universe's (apparent) fine-tuning to a hand of cards, given that there are far more possibilities for configurations of universes than there are for potential hands of cards. Still, given that the configuration of each and every constant is precise and perfect, despite the far greater likelihood of other, life-prohibiting configurations, it seems to me to be more correct to compare the fine-tuning itself to consistently and without exception receiving a royal flush, getting no other, lesser hands. This, surely, is vastly less probable than just receiving a single flush, and in such a situation, one may rightly suspect design rather than chance.

    Besides that, if you're going to argue that such incredibly unlikely configurations can happen, without exception and without being determined by an outside influence, then it seems to me that quite literally any pattern or series of events, however unlikely, could be rationalized and said to be purely coincidental. Of course, it's not the case that all patterns are a result of pure coincidence, though they do happen as such, but on this reasoning, every pattern could be presented as being coincidental when they, in fact, aren't.

    Quote
    And that still does nothing to change the probability of any one of those alternatives, including our unvierse, actually occurring. They are still all equally probable.


    They, individually, might all be equally (im)probable, but the probability of all of these immensely improbable configurations occurring simultaneously, coming together in the exact same universe, despite the much greater likelihood of others, does not seem to be, on the whole, equally probable to any other group of possible configurations. Indeed, I'd say it's not.

    Quote
    Yes, it can be dismissed like that. Physicists do not postulate multiverses just because they don't understand probability and are freaked out by apparently impressive arguments that have no real substance.


    Whether the multiverse hypothesis does or doesn't serve to explain apparent fine-tuning, it is advanced as a possible explanation for it. And physicists do acknowledge this fine-tuning, regardless of whether you think it's all bunk or not. Here, even Tricky Dicky discusses it and the opinions of physicists on the subject, and he's certainly not in the business of quote-mining scientists to score points for theism:

    http://www.youtube.com/watch?v=mlD-CJPGt1A&feature=related

    And here's our friend Roger Penrose talking about the fine-tuning of the initial conditions of the universe:

    http://www.youtube.com/watch?v=WhGdVMBk6Zo

    He discusses the improbability and apparent fine-tuning after 3 mins.

    Quote
    Zeb, that quote you posted and bolded parts of is a very good example of a common tactic among religious apologists. It's known as "quote mining", meaning you take a covenient small snippet out of someone's work and present it as if it supports your conclusion, when if you were to use a more comprehensive sample of that person's views they would not support your conclusion.


    It's not necessarily dishonest to quote the views of experts to support a conclusion, nor is it quote-mining. But indeed, it especially isn't if the experts themselves likewise accept or acknowledge the possibility of fine-tuning.

    Quote
    First: show that the people who did these calculations actually think that the calculations add weight to the fine tuning argument. Second, show that the calculations are demonstrably solid.


    With regards to the calculations, I'm afraid I must defer to those who are experts in the field. I wouldn't even know where to begin calculating such a thing, but if they do indeed say, as they seem to, that there is vast improbability (certainly more than could be easily dismissed as coincidental) in the configuration of our universe then I'd be inclined to think that they may be onto something. Nevertheless, it's entirely possible that this is all just a result of our limited grasp of physics and knowledge of the universe. However, as it stands now, it does seem as though there is (apparently) some kind of fine-tuning to the universe.

    Quote
    ETA: I should clarify that this is what you would have to do if you wished to claim that Penrose et al thought the fine tuning argument had any validity as evidence of design


    I don't think they themselves need to support the design hypothesis if said hypothesis may be safely or plausibly inferred from their evidence. It doesn't matter whether they endorse the existence of a designer, if the existence of a designer is supported by the facts, then it is, regardless of whether anyone accepts that possibility.
  • Re: The Fine Tuning Argument
     Reply #14 - April 17, 2011, 01:21 AM


    http://www.youtube.com/watch?v=FNiTsYCkyI8

    So once again I'm left with the classic Irish man's dilemma, do I eat the potato or do I let it ferment so I can drink it later?
    My political philosophy below
    http://www.youtube.com/watch?v=bwGat4i8pJI&feature=g-vrec
    Just kidding, here are some true heros
    http://www.youtube.com/watch?v=dBTgvK6LQqA
  • Re: The Fine Tuning Argument
     Reply #15 - April 17, 2011, 01:26 AM

    Quote
    I don't think they themselves need to support the design hypothesis if said hypothesis may be safely or plausibly inferred from their evidence. It doesn't matter whether they endorse the existence of a designer, if the existence of a designer is supported by the facts, then it is, regardless of whether anyone accepts that possibility.


    I think this is a leap given the definition of a all powerful creator.  If the creator can truly create any universe and make any law, than any universe created, no matter the laws contained, would be considered "finely tuned" which nulls out the idea that very specific measurements are an indication of a designer.  We might be able to say that it indicates a "designer" that has can manipulate matter or space but we would have to confine his abilities to less than the infinite.  

    So once again I'm left with the classic Irish man's dilemma, do I eat the potato or do I let it ferment so I can drink it later?
    My political philosophy below
    http://www.youtube.com/watch?v=bwGat4i8pJI&feature=g-vrec
    Just kidding, here are some true heros
    http://www.youtube.com/watch?v=dBTgvK6LQqA
  • Re: The Fine Tuning Argument
     Reply #16 - April 17, 2011, 01:28 AM

    Anyone even entertaining the outright absurd idea that the universe is fine tuned for life should watch this video: http://www.youtube.com/watch?v=tCKqj-2JXZg

    Too fucking busy, and vice versa.
  • Re: The Fine Tuning Argument
     Reply #17 - April 17, 2011, 01:29 AM

    just posted this in the other thread, i guess my views on the issue in general

    I don't' think there is any scientfic evidence for a designer whatsoever - I think what I was trying to say is that with the scientific knowledge we currently have, we can easily get the impression that the universe is 'fined tuned' for it's own existence - but this is because our knowledge is limited to just this universe and we may have no way of knowing whether other universes exist, and indeed our capacity for knowledge of this universe is  likely to be limited . I go on to make this point later in the post.

    But I do get slightly  Roll Eyes when it is constantly put forward as 'the fine-tuning argument'. A better way of describing the issue is 'scientific observations that we are very keen and interested to get to the bottom of'. These 'fine tuning' issues were first described by leading physicists and have been discussed by nobel laureates such as Steven Weinberg. It has led leading physicists such as Sir Martin Rees (Astonomer Royal and Professor at Cambridge University) to propose theories such as Multiverse theory - the idea being that if a bazillion universes exist than at least one might have the right constants/laws to give rise to the existence of a sustainable universe. So kind of like if you buy one lottery ticket your chanes of hitting the jackpot are tiny - but if you were to buy say a 10 million all with different number combinations, then your chances of hitting the jackpot become likely. However, there are some that say that mutiverse is not a theory of science since we cannot make any observations outside of out universe - so it can't be proved/disproved (I btw don't suscribe to the view that it is not a real scientific theory - it just depends on how you define 'science').

    I've tried to discuss the physics in more detail of some of these issues previously on here, if you want I can try to dig up the posts?


    ''we are morally and philisophically in the best position to win the league'' - Arsene Wenger
  • Re: The Fine Tuning Argument
     Reply #18 - April 17, 2011, 01:30 AM

    I think this is a leap given the definition of a all powerful creator.  If the creator can truly create any universe and make any law, than any universe created, no matter the laws contained, would be considered "finely tuned" which nulls out the idea that very specific measurements are an indication of a designer.  We might be able to say that it indicates a "designer" that has can manipulate matter or space but we would have to confine his abilities to less than the infinite.  


    This was the 'fatal flaw' that I alluded to earlier.

    And that's an alright video but it's doesn't the apparent precision in the tuning of the laws and constants. Nor really does that argument.
  • Re: The Fine Tuning Argument
     Reply #19 - April 17, 2011, 01:31 AM

    I agree, but precision of laws and constants doesn't tell us anything on its own.  I mean that in the sense that there are a lot of "hits" in the design argument but there are a lot of "misses" as well such as the limitation of the speed of light, vast coldness of space, etc.  Like Ishina's video points out to say the universe was designed ( for whom? for what purpose? those questions are integral to a design) has to take in an account of the "misses" of a designer as well.  If a proponent of a design theory can explain the problems with the design as well as its virtues it would have exponentially more explanatory power. 

    So once again I'm left with the classic Irish man's dilemma, do I eat the potato or do I let it ferment so I can drink it later?
    My political philosophy below
    http://www.youtube.com/watch?v=bwGat4i8pJI&feature=g-vrec
    Just kidding, here are some true heros
    http://www.youtube.com/watch?v=dBTgvK6LQqA
  • Re: The Fine Tuning Argument
     Reply #20 - April 17, 2011, 01:55 AM

    ...and a few previous posts regarding some of the physics

    Well they don't have to be excatly as they are but if one of a number of constants (there are about 20 key constant values) was changed slightly (we're talking tiny fractions) then the universe as we know it wouldn't exist - either stars wouldn't shine, or elements such as carbon wouldn't form or in the most extreme case the universe itself would be unstable and would cease to exist very quickly. This is not something I or any one else has made up btw, it's actually something that the scientific data we currently have about the universe tells us and which is why it's something that's widely accepted amongst the physics community from old-timers such as Martin Rees, to Nobel Prize winners such as Steven Weinberg to modern day physicists such as Brian Greene - it's something we know from the scientific data







    It's possible that these constants have the values they do simply as a consequence of the way nature is. For example in string/M-theory it is proposed that in addition to the 3 dimensions of space we are familiar with there exists six additional space dimesion so small that we cannot see or detect them (yet). It is thought that these six dimensions in addition to being tiny (in order of the planck length) they are also all tightly curled up into shapes known as Calabi-Yau shapes. It has been proposed that 1 dimesional strings of energy vibrate within these 6-dimesional Calabi-Yau shaped spaces, and it is a particular type of vibration that gives rise to say an electron - if a string is vibrating in a dfferent manner then this corresponds to say a top quark etc. But what's important is that the Calabi-Yau shapes determines the diffferent manner in which these one dimesional strings can vibrate and hence what particle/particle properties (including the force particles) we observe.

    A lot of the constants we have been discussing in these threads are particle properties such as the mass of an electron or the strength of the strong nuclear force (mediated by the gluon force particle), or the strenght of the electromagnetic force (mediated by the photon) etc. - so it's actually the shape and the configuration of the Calabi-Yau shape that the six extra dmensions are curled into that detrmines the particle properties and hence a lot of these constatns we have been talking about. Therefore, yes, we can say that in this theoretical model (of which I am very keen of) nature detrmines these constants. But even if all this were true - we still need to ask the question of how the Calabi-Yau shape came to be shaped so that it was in a confguration to give rise to particle properties/constants that appear to have just the right values for a stable universe with stars and stable nuclei to form. Remember if the value of one of these particle properties (i.e. mass of electron etc.) was changed it would have disastrous consequences for the universe - so how did these Calbi-Yau spaces happen to just be precisely the right shape for the formation of particle properties that would give rise to a stable universe with stars and stable nuclei etc.?

    At the moment it's difficult to think of a scientific explanantion (string theory itself is still in its infancy) - although there might well be one. If we accept Multiverse this could explain things - six dimesional Calabi-Yau shapes can have gazillions of different configurations - if there were gazillions of universes (or a gazillion 'big bang' events at least) then maybe a tiny handful of these would lead to configurations that would give rise to particle properties that would support a stable evolving universe with stars and stable nuclei etc. (although it's thought that the number of configurations that would allow this is miniscule compared to the total number of possible configurations).






    written one day when i was in the 'zone'  grin12

    ''we are morally and philisophically in the best position to win the league'' - Arsene Wenger
  • Re: The Fine Tuning Argument
     Reply #21 - April 17, 2011, 05:18 AM

    @Osman

    It's not often I find myself defending the fine-tuning argument! But just for shits 'n' giggles:

    Yeah, it's a good little exercise innit. grin12


    Quote
    The problem, as I see, is not just the matter of unlikely universes, but also the high improbability of each and every one of the required constants being what they need to be too. It's not just a matter of one equally unlikely universe, but rather, every single required constant in that universe being precisely what it needs to be despite the immense improbability of each one.

    I did warn you about getting dazzled by big numbers. You need to stop being fixated on them and think conceptually instead. Wink


    Quote
    I think it's quite dubious to compare something like the universe's (apparent) fine-tuning to a hand of cards, given that there are far more possibilities for configurations of universes than there are for potential hands of cards. Still, given that the configuration of each and every constant is precise and perfect, despite the far greater likelihood of other, life-prohibiting configurations, it seems to me to be more correct to compare the fine-tuning itself to consistently and without exception receiving a royal flush, getting no other, lesser hands. This, surely, is vastly less probable than just receiving a single flush, and in such a situation, one may rightly suspect design rather than chance.

    This is where you are going wrong, and it is this sort of thing I have been trying to explain to you.

    We have only one observable universe to use as a reference sample. I hope we can agree on that. If you wish to disagree with it you'd better be prepared to pony up some extra, real, observable universes for me. Since we have only one universe as our sample this is, in terms of probability calculations, the equivalent of being dealt one hand. It is not, in any way, the equivalent of being dealt billions of hands. If you are considering the likelihood of our universe you have to consider the probablilty of it as it is, not the probablility of every separate component of it. This one hand may have given an extemely unlikely result but it is still only one hand.

    Now if we had lots of observable universes available, and if they all supported sentient life and we knew they did, then the fine tuning argument would begin to look very interesting. We don't have that though. We only have the one universe as our sample, and probability calculations tell you nothing at all about whether you are likely to get one alternative or another in a single sample.

    Sure, they give you a likelihood if your sample size is sufficiently large but ours is not. No matter what the infintesimal probability of our universe happens to be, in the absence of a larger array of samples we can draw no conclusions from its existence, because drawing reliable statistical conclusions is critically dependent on having a large enough sample size to determine if your result cannot be attributed to chance.

    You should also bear in mind that, even for a vast array of hypothetical universes that do not support life, the probability of any one constant being precisely what it happens to be in that unverse is still going to be vanishingly small. The fact that it does not support life does not change this, so in a very real sense we can say that it would be just as unlikely as our universe anyway. This is a separate point to the sample size problem. The sample size problem alone is enough to kill fine tuning, but say you have half a dozen universal constants in every possible universe. Each one of those can potentially take a range of values that is presumably infinite, in the absence of anything suggesting otherwise. This means that for any and all possible universes, the probability of the constants being precisely what they are is not obviously going to be any higher than the probablity of constants in our universe having the exact values they have.


    Quote
    Besides that, if you're going to argue that such incredibly unlikely configurations can happen, without exception and without being determined by an outside influence, then it seems to me that quite literally any pattern or series of events, however unlikely, could be rationalized and said to be purely coincidental. Of course, it's not the case that all patterns are a result of pure coincidence, though they do happen as such, but on this reasoning, every pattern could be presented as being coincidental when they, in fact, aren't.

    They, individually, might all be equally (im)probable, but the probability of all of these immensely improbable configurations occurring simultaneously, coming together in the exact same universe, despite the much greater likelihood of others, does not seem to be, on the whole, equally probable to any other group of possible configurations. Indeed, I'd say it's not.

    I see you're using the Argument from Personal Incredulity. My response above covers this.


    Quote
    Whether the multiverse hypothesis does or doesn't serve to explain apparent fine-tuning, it is advanced as a possible explanation for it. And physicists do acknowledge this fine-tuning, regardless of whether you think it's all bunk or not. Here, even Tricky Dicky discusses it and the opinions of physicists on the subject, and he's certainly not in the business of quote-mining scientists to score points for theism:

    Ok, but what they are saying is somewhat different to what you originally said. You said this:

    People who work with numbers, physicist themselves, acknowledge this apparent 'fine-tuning.' But in any case it's clear that our universe and the configuration of its laws and constants are not equal in probability to that of any other, because every single constant and law is precisely what it has to be in order for life to be able to form, and indeed there is a vast number of alternatives which could easily have been, but are not. Alternatives that would preclude the existence of life.

    I don't even really agree with the argument, and in fact it has at least one fatal flaw that I can think of, but the subject of the universe's apparent fine-tuning is an important one, and it can't be flippantly dismissed as an attempt to woo the plebs with big numbers, hence why even physicists try to explain it with things like multiverses and so on.

    Your post implied that the reason for multiverse theory being conceived in the first place was because "physicists" (implying any and all of them, by the way) wanted a way of explaining fine tuning. This wasn't what happened, of course. What happened was that, having become aware that our universe is finite in size and age, and not having any obvious proof that it was or could be the only universe, physicists would have to be gobsmackingly unimaginative to not wonder if multiple universes were possible and, if so, what they might be like. As you may have noticed, good theoretical physicists tend not to be gobsmackingly unimaginative.

    What Dicky was saying was basically just that we know the constants have to have very precise values to make our particular universe stable, and that some people wonder if there is something more to this. No offense, but I knew that already. Wink


    Quote
    It's not necessarily dishonest to quote the views of experts to support a conclusion, nor is it quote-mining. But indeed, it especially isn't if the experts themselves likewise accept or acknowledge the possibility of fine-tuning.

    Yes, but it is if you present their quote snippets as supporting your contention for a deity when they think otherwise, and if you refuse to quote the bits where they say this and why.


    Quote
    I don't think they themselves need to support the design hypothesis if said hypothesis may be safely or plausibly inferred from their evidence. It doesn't matter whether they endorse the existence of a designer, if the existence of a designer is supported by the facts, then it is, regardless of whether anyone accepts that possibility.

    The existence of a designer is not supported by the facts, though. The illusion that it is is a result of not undestanding how the probabilities should be assessed.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #22 - April 17, 2011, 05:30 AM

    Zeb, I've thought of another analogy that may help clarify this for you. Let's say you decide that you want to know how many people like coffee. Now a basic survey form might look like this:

    Question: do you like coffee?

    Possible answers (select one only):

    1/ Yes.
    2/ No.
    3/ Indifferent.
    4/ Don't know as I have never tried it.


    So this is ok, but you decide you want more information. You add more options to the possible answers. You are really fussy and want to get the most accurate results, so you add a hell of a lot of options. Let's say, just for the sake of conceptual argument, that you end up with a survey form that provides respondents with 5.763x10fucking lots options, of which they may select only one as their actual response.

    You are now ready to find out once and for all how what proportion of people like coffee and exactly how they like it. The great day is at hand! Afro

    So, you go out and pick one person at random. Just one person. You give them your survey form and ask them to pick their response. Naturally, this takes them a few days due to the size of the form, but somehow (don't get into this bit) they manage to get it done and then return the form to you.

    Awesome! Your survey is complete! You are now in the position to discern the answer to your conundrum and, holy motherfucking wombats, you find that 100% of people like their coffee hot, sweet, rich, grown by fair trade plantations, and served by dark-eyed tanned earth goddesses of the scrumptious variety whilst the recipient of said coffee reclines in a Jacuzzi full of mango juice!

    Fuck me dead! The chances of that happening are only one in 5.763x10fucking lots! This is a miracle! How can this be?

    Is it evidence of design? Huh?


    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #23 - April 17, 2011, 06:00 AM

    Anyone even entertaining the outright absurd idea that the universe is fine tuned for life should watch this video: http://www.youtube.com/watch?v=tCKqj-2JXZg


    what are the odds of finding a lush apple tree in the middle of an arid desert? And if it exists, against all odds, what would that tell you?

    A googolplex is *precisely* as far from infinity as is the number 1.--Carl Sagan
  • Re: The Fine Tuning Argument
     Reply #24 - April 17, 2011, 06:36 AM

    what are the odds of finding a lush apple tree in the middle of an arid desert? And if it exists, against all odds, what would that tell you?


    There is a natural spring nearby? 

    So once again I'm left with the classic Irish man's dilemma, do I eat the potato or do I let it ferment so I can drink it later?
    My political philosophy below
    http://www.youtube.com/watch?v=bwGat4i8pJI&feature=g-vrec
    Just kidding, here are some true heros
    http://www.youtube.com/watch?v=dBTgvK6LQqA
  • Re: The Fine Tuning Argument
     Reply #25 - April 17, 2011, 06:41 AM

    Quote
    I agree, but precision of laws and constants doesn't tell us anything on its own.  I mean that in the sense that there are a lot of "hits" in the design argument but there are a lot of "misses" as well such as the limitation of the speed of light, vast coldness of space, etc.  Like Ishina's video points out to say the universe was designed ( for whom? for what purpose? those questions are integral to a design) has to take in an account of the "misses" of a designer as well.  If a proponent of a design theory can explain the problems with the design as well as its virtues it would have exponentially more explanatory power.  

     
    i'm not sure if the fine-tuning argument is an argument for design, but rather an argument for the mircaculous nature of our existence (against all odds).

    Let me explain what I mean.

    Suppose an engineer builds an EXTREMELY unstable system, yet it works, without fail. I would call that engineer a magician.

    what I'm saying is, the fact that the stability of our universe is ultra sensitive to the values of a few physical constants is regarded, in the world of engineering, as a very bad design... yet the fact that our disater prone universe is still standing, precisely because these constants happen to be fixed, implies an infinitely improbable event, and therefore, it is meant to be.

    A googolplex is *precisely* as far from infinity as is the number 1.--Carl Sagan
  • Re: The Fine Tuning Argument
     Reply #26 - April 17, 2011, 06:43 AM

    There is a natural spring nearby?  

    then the odds are good for that tree to grow, and my whole emphasis on the arid desert would be irrelevant.

    Please don't evade  the question.

    A googolplex is *precisely* as far from infinity as is the number 1.--Carl Sagan
  • Re: The Fine Tuning Argument
     Reply #27 - April 17, 2011, 07:23 AM

    i'm not sure if the fine-tuning argument is an argument for design, but rather an argument for the mircaculous nature of our existence (against all odds).

    <snip>

    what I'm saying is, the fact that the stability of our universe is ultra sensitive to the values of a few physical constants is regarded, in the world of engineering, as a very bad design... yet the fact that our disater prone universe is still standing, precisely because these constants happen to be fixed, implies an infinitely improbable event, and therefore, it is meant to be.

    Do you realise that you began your post by saying you weren't sure if the fine tuning argument was evidence for design, and then finished your post by saying that effectively the fine tuning argument is evidence for design? Can you see a problem here?

    Bolding is mine BTW. I edited out your earlier bolding.


    then the odds are good for that tree to grow, and my whole emphasis on the arid desert would be irrelevant.

    Please don't evade  the question.

    It's not a good question though. A universe is not an apple tree. A universe does not require water and several other things to exist. You need to think of a much better analogy before you can hope to gain any traction. You have dumbed this one down to the point of uselessness.

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: The Fine Tuning Argument
     Reply #28 - April 17, 2011, 09:03 AM

    Every version of the whole "fine tuning" thing can usually be summarized with this analogy:

    Let's assume that randomness exists.
    Let's throw a coin one gazillion times.
    What was the probability of that particular sequence of heads and tails happening exactly with that configuration i witnessed?
    It's 1/(2^(1 gazillion)).
    Which is basically zero.
    Therefore randomness does not exist.
    Therefore everything happens according to a plan.

    Do not look directly at the operational end of the device.
  • Re: The Fine Tuning Argument
     Reply #29 - April 17, 2011, 09:15 AM

    That's a nice summary too. Afro

    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
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