On 12/21/2013 1:17 AM, Bruno Marchal wrote:
On 20 Dec 2013, at 16:48, Richard Ruquist wrote:
http://arxiv.org/pdf/1212.0953.pdf
Origin of probabilities and their application to the multiverse
Andreas Albrecht <http://arxiv.org/find/gr-qc/1/au:+Albrecht_A/0/1/0/all/0/1>, Daniel
Phillips <http://arxiv.org/find/gr-qc/1/au:+Phillips_D/0/1/0/all/0/1>
(Submitted on 5 Dec 2012)
We argue using simple models that all successful practical uses of
probabilities
originate in quantum fluctuations in the microscopic physical world around
us,
often propagated to macroscopic scales. Thus we claim there is no physically
verified fully classical theory of probability. We comment on the general
implications of this view, and specifically question the application of
classical
probability theory to cosmology in cases where key questions are known to
have no
quantum answer.
Richard: I cannot copy over the relevant portions of the text. They
conclude:
"thus are very skeptical of multiverse theories that depend on classical
probabilities for their predictive power".
Is it a snooker? Does not MWI use quantum probabilities?
It might be worth a read.
They assumed QM, and physicalism, which are not available options once we assume
computationalism.
I think you answered to quickly, without reading the paper. Probably they do assume
physicalism, but I don't think it enters into their argument; and I think their
conclusions are compatible with your theories.
Brent
MWI somehow does bring back classical probability, from the quantum, making it into an
ignorance about the computations which bear our actual relative state, in the comp theory.
Bruno
http://iridia.ulb.ac.be/~marchal/ <http://iridia.ulb.ac.be/%7Emarchal/>
--
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.
