On 10/25/2022 3:31 PM, John Clark wrote:
On Tue, Oct 25, 2022 at 6:14 PM Bruce Kellett <bhkellet...@gmail.com>
wrote:
/> That is as much mumbo-jumbo as anything in Copenhagen. For
instance, what determines if the difference between the worlds is
small 'enough'?/
If only a tiny change has been madethen it's not unlikely that another
tiny change can change it back, but the more changes that occur the
less likely it is that will happen. It's rather like thermodynamics,
if you watch a movie of just 2 pool balls colliding you can't tell if
the movie is running forwards or backwards, but if you watch a movie
of a pool ball hitting 10 pool balls arranged in a geometrical pattern
then it's easy to tell if the movie is running forwards or backwards.
The more changes there are between the 2 universes the less likely it
is for them to merge back together again, and the changes multiply
very rapidly, that's why performing these sorts of quantum experiments
are difficult.
/> You are using the result of no divergence between worlds to
conclude something about a divergence that probably never
occurred. It is simpler to state that no measurement was made in
the Deutsch set-up. Measurement, after all, involves irreversible
decoherence, and such cannot be 'quantum erased'. So no which-way
measurement would have been made in the Deutsch experiment./
If no which-way measurement has been made then how do you explain the
documentthat swears that such a measurement HAD been made?
Why would you believe the document was correct?
Brent
John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>
dah
73v
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