The arguments for Fine tuning and Design have common roots in the belief that randomness and/or Chance play a role in the outcomes of cause and effect events in nature. he reality is nothing in the outcomes of cause and effects in nature is random, or as Einstein commented, "the dice are loaded."
First the 'belief' in 'Fine Tuning' is hypothetical and without objective evidence. Fads tend to fade if there is no objective evidence to support them.
Yes the existence of a Multi-verse is possible, but at present we only have evidence of one universe ours. One of the arguments for Fine Tuning is the multiverse argument considering the belief that there is the possibility of a wide range of a wide range of possible constants for there to be one like ours to have all the constants within the narrow possible range for life. The problem is yes IF there is a wide range of possible constants this may be true. bue we do not know the possible range of constants that different universes could have in a multiverse. Actually we do not know the possible range of constants for different universes if the multiverse exists, The range of constants may be very narrow or as Einstein propose the "dice are loaded."
It is more likely that if there was any significant variation in the constants of universes in a hypothetical multiverse any alternate universes out side a narrow range of constants would simply fail to form and exist,
The following is an excellent argument against any form of Fine tuning.
Our laws of nature and our cosmos appear to be delicately fine-tuned for life to emerge, in a way that seems hard to attribute to chance. In view of this, some have taken the opportunity to revive the scholastic Argument from Design, whereas others have felt the need...
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Abstract
Our laws of nature and our cosmos appear to be delicately fine-tuned for life to emerge, in a way that seems hard to attribute to chance. In view of this, some have taken the opportunity to revive the scholastic Argument from Design, whereas others have felt the need to explain this apparent fine-tuning of the clockwork of the Universe by proposing the existence of a ‘Multiverse’. W
e analyze this issue from a sober perspective. Having reviewed the literature and having added several observations of our own, we conclude that cosmic fine-tuning supports neither Design nor a Multiverse, since both of these fail at an explanatory level as well as in the more quantitative context of Bayesian confirmation theory (although there might be other reasons to believe in these ideas, to be found in religion and in inflation and/or string theory, respectively). In fact, fine-tuning and Design even seem to be at odds with each other, whereas the inference from fine-tuning to a Multiverse only works if the latter is underwritten by an additional metaphysical hypothesis we consider unwarranted. Instead, we suggest that fine-tuning requires no special explanation at all, since it is not the Universe that is fine-tuned for life, but life that has been fine-tuned to the Universe.
1 Introduction
Twentieth Century physics and cosmology have revealed an astonishing path towards our existence, which appears to be predicated on a delicate interplay between the three fundamental forces that govern the behavior of matter at very small distances and the long-range force of gravity. The former control chemistry and hence life as we know it, whereas the latter is responsible for the overall evolution and structure of the Universe.
- If the state of the hot dense matter immediately after the Big Bang had been ever so slightly different, then the Universe would either have rapidly recollapsed, or would have expanded far too quickly into a chilling, eternal void. Either way, there would have been no ‘structure’ in the Universe in the form of stars and galaxies.
- Even given the above fine-tuning, if any one of the three short-range forces had been just a tiny bit different in strength, or if the masses of some elementary particles had been a little unlike they are, there would have been no recognizable chemistry in either the inorganic or the organic domain. Thus there would have been no Earth, no carbon, et cetera, let alone the human brains to study those.
Broadly, five different responses to the impression of fine-tuning have been given:
- 1.
Design: updating the scholastic Fifth Way of Aquinas (1485/1286), the Universe has been fine-tuned with the emergence of (human) life among its designated purposes.Footnote1
- 2.
Multiverse: the idea that our Universe is just one among innumerably many, each of which is controlled by different parameters in the (otherwise fixed) laws of nature. This seemingly outrageous idea is actually endorsed by some of the most eminent scientists in the world, such as Martin Rees (1999) and Steven Weinberg (2007). The underlying idea was nicely explained by Rees in a talk in 2003, raising the analogy with ‘an ‘off the shelf’ clothes shop: “if the shop has a large stock, we’re not surprised to find one suit that fits. Likewise, if our universe is selected from a multiverse, its seemingly designed or fine-tuned features wouldn’t be surprising.” (Mellor 2002).
- 3.
Blind Chance: constants of Nature and initial conditions have arbitrary values, and it is just a matter of coincidence that their actual values turn out to enable life.Footnote2
- 4.
Blind Necessity: the Universe could not have been made in a different way or order, yet producing life is not among its goals since it fails to have any (Spinoza 1677).Footnote3
- 5.
Misguided: the fine-tuning problem should be resolved by some appropriate therapy.
We will argue that whatever reasons one may have for supporting the first or the second option, fine-tuning should not be among them. Contemporary physics makes it hard to choose between the third and the fourth option (both of which seem to have supporters among physicists and philosophers),
Footnote4 but in any case our own sympathy lies with the fifth.
More to follow . . .