You skipped the "how" part. If a particle interacts so that it's state
changes to A with probabilty 0.99 and B with probability 0.01 is that a
change that produces a difference between two worlds?
Brent
On 11/19/2024 5:13 AM, John Clark wrote:
On Mon, Nov 18, 2024 at 5:37 PM Brent Meeker <meekerbr...@gmail.com>
wrote:
/> MWI needs to explain how and when the worlds split,/
*As I've said many many times before, the world splits whenever there
is a change that produces a difference between the two worlds,
conscious humanobservers are capable of producing such a change that
makes the universe split, but so can dead humancadavers which are
presumably non-conscious non-observers. In Many Worlds, anything and
everything that is not forbidden to exist by the laws of physics is
required to exist; in other words, **the laws of physics work the same
way for EVERYTHING. *
>> *The useful role that Many Worlds provides is that it doesn't
need to explain what a "measurement" or an "observer" is*
/> LOL. You just wrote three paragraphs immediately above each of
which referred to "observed". /
*If you ask me what would an observer expect to see in a certain
situation, then for me to answer your question I'm going to have to
use the word "observer". I'm not afraid of that word because Many
Worlds does not say observers don't exist, instead it says it doesn't
care what an "observer" is or whether such a thing exists or not
because the laws of physics always treat everything the same way.*
*
*
*A particle X has a Half-life of 60 seconds and Y (which could be you
or it could be anything else) interacts with X once a second, thus
after one second the probability of Y being in the same universe as
the one where the atom decayed is 50%, and after 30 seconds the
probability (/using the formula P(decay by time t) = 1 - e^(-λt)
,where λ is ln2/60 minutes/) of **Y being in the same universe as the
one where the atom decayed is about 29%, and after 10 minutes the
probability is about 11%. *
*
*
*As you can see, the more often Y interacts with particle X the more
likely it is that Y and undecayed particle X will still be in the same
universe, although if Y is a conscious human observer he would
probably use different words to describe the experience, such as "/the
more closely I watch the atom the less likely it is to decay/". *
*
*
*We know for certain, thanks to experiment, that this Quantum Zeno
Effect exists, and Many Worlds has no trouble clearly explaining how
that could happen, if Copenhagen wants to explain how this could occur
they're going to need to crank up their bafflegab knob to 11. *
*>>nor does it need to explain exactly, or even approximately,
where the Heisenberg cut is.*
/> No, it just assumes there is a point at which the world becomes
multiple and measurement is complete./
*Many Worlds needs no such assumption, in fact it doesn't even make
any sense; in Many Worlds you can always replace the word
"measurement" with "change" or "interaction", and changes and
interactions are _never_ complete. Copenhagen is the one that needs to
make that assumption, and the theory that needs the fewest assumptions
is the best theory. *
*
*
*John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
bgn
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