Hence my suggestion that we just need to sample a lot of universes... :-)
On 18 January 2014 19:17, meekerdb <[email protected]> wrote: > On 1/17/2014 8:35 PM, Jason Resch wrote: > > > > > On Fri, Jan 17, 2014 at 9:55 PM, meekerdb <[email protected]> wrote: > >> On 1/17/2014 3:13 PM, LizR wrote: >> >> Indeed it would be very strange, perhaps verging on miraculous. I believe >> just the nuclear resonance discovered by Hoyle alone is already incredibly >> fine tuned, after which we have the amazing properties of carbon and water, >> and the cosmological flatness and god (ahem) knows what else. >> >> >> Hoyle predicted that there had to be an excited state of C^12 at 7.7Mev >> in order to produce the observed abundance of carbon. It was observed at >> 7.656Mev. But it was shown by Livio, M. et al. (1989). "The Anthropic >> Significance of the Existence of an Excited State of C12." Nature 340, >> 281-284, that essentially the same amount would be produced by a resonance >> between 7.596Mev and 7.716Mev. Even more would be produced with a lower >> resonance down to 7.3367Mev, the difference between Be^8 + He^4 and C^12. >> And carbon sufficient for life would be produced up to 7.933Mev. Whether >> an 8% range is fine-tuned or not, I don't think it's "incredibly >> fine-tuned". >> > > It becomes incredible when one considers the 10 - 20 other parameters > that similarly had to be within a narrow range. > > > What are they? I've seen a lot of questionable claims of 'fine-tuning'. > One problem is that 'narrow range' is ill defined. If there is no natural > limit on a variable, then any range is 'narrow' relative to *+*inf. > > Brent > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
