On Sat, Sep 26, 2020 at 9:48 AM Brad Klee <bradklee@gmail.com> wrote:
According to my newsfeed, a mathematical proof of a
grandfather-nonparadox theorem has been achieved in
almost perfect timing with the release of Christopher
Nolan's new movie "Tenet". Briefly perusing the paper,
it seemed to be above my paygrade. Their idea about
time traveling "agents" confused me--are the "agents"
supposed to be subatomic particles or can they be
equipped with extra, dangerous technology?
Seeking an answer to this question, I decided to travel
back in spacetime (Elsewhere in the Buddhaverse),
Cordoba, Argentina, 1992, where A Plenary Lecture
on closed timelike curves (CTCs) was given by Nobel
Prize winner Kip S. Thorne:
https://s3.cern.ch/inspire-prod-files-9/9e243ddb6420681ac2362781c9754c04
This article I could almost understand, and the conclusion
in section four seems to me, most reasonable. A feature
of the Feynman diagrams is that they contain CTC's at
a subatomic scale. Since a theory of quantum gravity
is lacking, we don't know if quantum CTC's could ever
extrapolate to macroscopic scales.
Later in the future, why should we be surprised if
known quantum behaviors reach a semiclassical
or classical cut-off, beyond which extrapolation is
nonsense?
The other totally stupid idea I've heard is that, due
to tunneling solutions of Schroedinger's equation,
people might someday be able to walk through
walls. I guess I'll change my position if such a
measurement is ever made during my lifetime.
As for "Tenet", I risked a large theatre with ten or
so other people, and liked the movie much more
than interstellar (a movie that I couldn't understand
in the least). A sequel could turn out even better.
Terms are already defined, and we have a few
questions left to wonder about. Who is this woman
being compared to Oppenhiemer? What type of
mechanisms exist for enacting an uncertainty
principle between the orthogonal dimensions
of protagonist and antagonist?
All the facts of the movie point strongly to the
interpretation that "the protagonist" should
not be trusted!
When venturing to public spaces, be advised
of inherent COVID danger in closed rooms.
--Brad
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-- Thane Plambeck tplambeck@gmail.com http://counterwave.com/