On 11/14/2024 6:47 AM, John Clark wrote:
On Wed, Nov 13, 2024 at 6:43 PM Brent Meeker <[email protected]>
wrote:
*>> for every event, for every point in space and forevery
instant in time, the square of the absolute value of the
quantum wave*
/> You keep forgetting that the wave-function exists in an
infinite dimensional vector space. NOT 3space. Doesn't sound so
"real" then does it?/
*But ANYTHING can be written as existing in infinite dimensional
vector space. Sounds like NOTHING is real doesn't it.
*
To me it sounds like "for every event, for every point in space and for
every instant in time, the square of the absolute value of the thing
we've written on the black board" isn't real.
> /There are several kinds of probability. All the ones in QM are
calculated values dependent on humans and their knowledge/
*Humans say a coin flip has a 50-50 probabilitybecause they lack
knowledge of the local conditions, the precise way the coin was
flipped and tiny air currents in the immediate vicinity of the coin.
But in quantum mechanics that's not the reason we must settle for
probability and can't achieve certainty; Bell's Inequality is violated
so if quantum weirdness is caused by hidden variables (and I doubt
they are) they can't be caused by local hidden variables like those of
a coin flip. *
Was any of that common knowledge relevant to "There are several kinds of
probability. All the ones in QM are calculated values dependent on
humans and their knowledge"?
*
*
*>> **It's true that you can't touch probability, but you
can't touch entropy either, but both are "things" that exist
in the physical world.*
/> I don't think so. They only exist in our descriptions of the
physical world./
*The idea of entropy is inextricably linked with information, and
information is physical; Landauer's principle allows us to calculate
the fundamental lower bound on the energy needed to erase one bit of
information, it is _kT ln 2_, where k is the Boltzmann constant and T
is the temperature in degrees kelvin. At room temperature it's about
2.9 x 10^-21 joules per bit. That sure sounds physical to me. *
Sounds like a theory to me.
"https://arxiv.org/html/2402.15812v1";
*>> "Many Worlds, in it a measurement is simply a change._All
measurements are __changes BUT not all changes are a
measurement_; this is because "measurement" implies that a
consciousness, or at least an intelligence, is involved"*
**
/> So JKC claims that consciousness has nothing to do with
measurement,/
*NO! JKC claims that consciousness has nothing to do with Many Worlds
or with quantum mechanics, the only thing they have in common is that
consciousness is strange and quantum mechanics is strange.
*
So you were wrong to write,``"measurement" implies that a
consciousness, or at least an intelligence, is involved'' or are you now
saying "measurement" has nothing to do with MW?
Brent
*
**John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
e4a
*
*
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