On 6/22/2019 4:06 AM, Philip Thrift wrote:
On Friday, June 21, 2019 at 8:20:04 PM UTC-5, Brent wrote:
"Good old classical chance" is just quantifying ignorance. At a
fundamental level there must be either inherent chance, QM, or
determinism.
Brent
That's true.
*Stochastic processes* [
https://en.wikipedia.org/wiki/Stochastic_process] are, primarily,
"approximate" models of phenomena that are extremely complex (too
complex to model), but still deterministic.
It is assumed that only (possible) source of *actual stochasticity *is
from quantum events, but science news stories about how large
molecules can exhibit quantum behavior bleeds that randomness into the
"macro" world.
*Origin of probabilities and their application to the multiverse*
Andreas Albrecht, Daniel Phillips
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.
Comments: 4 pages including one table
Subjects: General Relativity and Quantum Cosmology (gr-qc); Cosmology
and Nongalactic Astrophysics (astro-ph.CO); High Energy Physics - Theory
(hep-th); Quantum Physics (quant-ph)
Cite as: arXiv:1212.0953 [gr-qc]
(or arXiv:1212.0953v1 [gr-qc] for this version)
Brent
I think the only alternative to "true" randomness is the MWI, which
physicists like SeanCarroll like (*"The Many-Worlds formulation of
quantum mechanics Is probably correct"*, June 30, 2014). Ironically,
the word "probably" is in his assertion. William James said aversion
to randomness is superstition.
@philipthrift
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