Telmo, No, compression is totally unable to explain the storage of total information in a universe which continually doubles its amount of information from one Planck time to the next and continually adds that amount to the cumulative total.
Edgar On Wednesday, March 19, 2014 8:17:28 AM UTC-4, telmo_menezes wrote: > > > > > On Wed, Mar 19, 2014 at 12:54 PM, Edgar L. Owen <[email protected]<javascript:> > > wrote: > >> Brent, >> >> If information is not being lost then the amount of information in the >> universe is increasing at a tremendous rate as new events occur, and has >> been since the beginning. So where is all that new information being >> stored? How can ever increasing amounts of information be being stored in >> the SAME amount of matter states? >> > > By an increase in Shannon entropy, up to a point. > This is why you can compress computer files, for example. > > Telmo. > > >> >> Presumably you do agree that information can't just float around somehow >> without actually being encoded in actual matter states? >> >> I think I know the answer but would like to hear your take on it first.... >> >> Edgar >> >> >> >> On Tuesday, March 18, 2014 8:57:57 PM UTC-4, Brent wrote: >> >>> On 3/18/2014 5:07 PM, LizR wrote: >>> >>> On 19 March 2014 12:47, meekerdb <[email protected]> wrote: >>> >>>> But in general that would mean knowing the state of everything the >>>> system had interacted with in the past, since it is now entangled with >>>> them. So even if you suppose there is no collapse of the wavefunction, >>>> decoherence has the same effect. >>>> >>> >>> I was only asking about the theoretical possibility, given >>> unrealistically perfect information about the state of the system. >>> >>> >>> The universe (assuming unitary QM) is reversible. In fact from the >>> standpoint of QM there is no arrow of time - it's deterministic, just like >>> Laplace's universe. So, as always, when the word "possibility" is used >>> there has to be some context. To *calculate* a history of the universe >>> from it's present state would require knowing its *complete* present state, >>> including your mental state. Is that "theoretically possible"? I think it >>> involves a paradox of self-reference. >>> >>> To put it another way, in the Game of Life, even with perfect >>> information, you can't trace the state of the system backwards because it >>> loses information. So even the laws of physics couldn't work backwards in a >>> universe based on the GOL. QM, I'm informed, doesn't lose information, so >>> (very much in theory) you could work backwards - or (less in theory) the >>> laws of physics could. >>> >>> >>> Yes the universe doesn't lose information like the GoL. But relative to >>> any point it loses information across spacetime horizons. So there's no >>> way to gather that information up into a calculation unless you have some >>> God's eye view from outside the universe, in which case you could see the >>> past anyway. >>> >>> There's a couple of nice papers about this by Yasunori Nomura: >>> arXiv:1205.267v2 is a popular exposition and arXiv:1205.5550v2 is a more >>> technical paper. >>> >>> Brent >>> >>> >>> I wasn't asking whether I could build a chronoscope and watch the past >>> happening on TV. >>> >>> -- >>> 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/d/optout. >>> >>> >>> -- >> 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] <javascript:>. >> To post to this group, send email to [email protected]<javascript:> >> . >> Visit this group at http://groups.google.com/group/everything-list. >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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/d/optout.
