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 -- 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.
