> On 4 Dec 2018, at 09:25, Philip Thrift <[email protected]> wrote: > > > > On Monday, December 3, 2018 at 9:00:26 PM UTC-6, Brent wrote: > > > On 12/3/2018 8:50 AM, Bruno Marchal wrote: >> >>> On 3 Dec 2018, at 10:35, Philip Thrift <[email protected] <javascript:>> >>> wrote: >>> >>> >>> >>> On Sunday, December 2, 2018 at 8:17:54 PM UTC-6, Brent wrote: >>> >>> >>> On 12/2/2018 5:14 PM, Philip Thrift wrote: >>>> >>>> >>>> On Sunday, December 2, 2018 at 4:25:04 PM UTC-6, Brent wrote: >>>> >>>> >>>> On 12/2/2018 11:42 AM, Philip Thrift wrote: >>>>> >>>>> >>>>> On Sunday, December 2, 2018 at 8:13:48 AM UTC-6, [email protected] <> >>>>> wrote: >>>>> >>>>> Obviously, from a one-world perspective, only one history survives for a >>>>> single trial. But to even grossly approach anything describable as >>>>> "Darwinian", you have to identify characteristics of histories which >>>>> contribute positively or negatively wrt surviving but I don't see an >>>>> inkling of that. IMO, Quantum Darwinism is at best a vacuous restatement >>>>> of the measurement problemt; that we don't know why we get what we get. AG >>>>> >>>>> >>>>> >>>>> >>>>> In the sum over histories interpretation - of the double-slit experiment, >>>>> for example - each history carries a unit complex number - like a gene - >>>>> and this gene reenforces (positively) or interferes (negatively) with >>>>> other history's genes in the sum. >>>> >>>> But I thought you said the ontology was that only one history "popped out >>>> of the Lottery machine"? Here you seem to contemplate an ensemble of >>>> histories, all those ending at the given spot, as being real. >>>> >>>> Brent >>>> >>>> >>>> >>>> >>>> All are real until all but one dies. >>>> RIP: All those losing histories. >>> >>> The trouble with that is the Born probability doesn't apply to histories, >>> it applies to results. So your theory says nothing about the probability >>> of the fundamental ontologies. >>> >>> Brent >>> >>> >>> >>> >>> >>> The probability distribution on the space of histories is provided by the >>> path integral. > > Except that isn't true. A probability (or probability density) is provided > for a bundle of histories joining two events. It doesn't not provide a > probability of a single history. > > Brent > > > That's why you add to that "pick any history at random from the bundle”:
… where Omnès added “time to be irrational” ... > > 1. Histories originate at an emitter e and end at screen locations s on a > screen S. > 2. At each s there is a history bundle histories(s). A weight w(s) is > computed from the bundle by summing the unit complex numbers of the histories > and taking the modulus. > 3. The weight w(s) is sent back in time over a single history h*(s) selected > at random (uniformly) from histories(s). > 4. At e, the weights w(s) on backchannel of h*(s) are received (in the > "present" time) > 5. A single history h*(s*) is then selected from the distribution in 4. "5.” follows from mechanism as a first person view. No need of Omnès mysterious selection. Bruno > > See the Wheeler-Feynman computer: > [ > https://codicalist.wordpress.com/2018/09/25/retrosignaling-in-the-quantum-substrate/ > ] > > - pt > > -- > 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] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/everything-list > <https://groups.google.com/group/everything-list>. > For more options, visit https://groups.google.com/d/optout > <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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
