On Wed, Dec 5, 2018 at 4:51 PM Philip Thrift <[email protected]> wrote:
> On Tuesday, December 4, 2018 at 11:39:43 PM UTC-6, Bruce wrote: >> >> On Wed, Dec 5, 2018 at 3:53 PM Philip Thrift <[email protected]> wrote: >> >>> On Tuesday, December 4, 2018 at 10:28:39 PM UTC-6, Philip Thrift wrote: >>>> >>>> On Tuesday, December 4, 2018 at 3:45:32 PM UTC-6, Bruce wrote: >>>>> >>>>> On Wed, Dec 5, 2018 at 6:58 AM Philip Thrift <[email protected]> >>>>> wrote: >>>>> >>>>>> >>>>>> On Tuesday, December 4, 2018 at 1:53:15 PM UTC-6, Brent wrote: >>>>>>> >>>>>>> >>>>>>> On 12/4/2018 12:25 AM, Philip Thrift wrote: >>>>>>> >>>>>>> >>>>>>> 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. >>>>>>> >>>>>>> >>>>>>> How is it selected? Above you said "at random". But that implies >>>>>>> there is already a probability measure defined on the histories. How is >>>>>>> this probability measure determined? Or put another way how do you >>>>>>> determine what histories to consider to form the bundles in step 2? >>>>>>> >>>>>>> Brent >>>>>>> >>>>>> >>>>>> Selection happens via quantum Darwinism. >>>>>> >>>>> >>>>> >>>>> Do you have even the faintest understanding of Quantum Darwinism? >>>>> >>>>> Bruce >>>>> >>>> >>>> How is *sum over histories with Darwinian selection* (as defined) not >>>> quantum Darwinism? >>>> >>>> Operationally, what is different? >>>> >>>> - pt >>>> >>> >>> *Sum over histories with Darwinian selection* is consistent with *Quantum >>> Darwinism as a Darwinian process* [ https://arxiv.org/abs/1001.0745 ]. >>> >> >> No, you clearly don't understand Quantum Darwinism! Zurek's Darwinism is >> selection of pointer states, not one history from a bundle. >> >> Bruce >> > > > Histories are (hidden) states. > It becomes obvious that you don't really understand consistent histories, either. Bruce -- 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.
