On 11/21/2024 1:27 PM, John Clark wrote:
On Thu, Nov 21, 2024 at 3:53 PM Brent Meeker <meekerbr...@gmail.com>
wrote:
*>> I thought Carroll did a pretty good job showing that
during the time interval between the wave function branching,
due to decoherence, and an observerregistering the outcome of
a measurement, even if "he" knew the wave function of the
entire Multiverse "he" still wouldn't know which branch "he"
was on because before "he" opened his eyes and looked around
all the hes on all the branches would be identical. Only after
that do they become uniqueindividuals. To ask, before you have
seen, heard, felt, smelled or tasted anything, "which _ONE_
branch am I on?" cannot be answered because during that time
interval "you" are on many branches, perhaps infinitely many.*
/> So where would he be if he just walked away without ever
looking at the result?/
*Mr.**He would remain in every branch until something in the
environment interacted with the man in a way that was different from
that of every other branch. And that wouldn't take long because even
if Mr.He didn't directly look at the results those results would still
affect other things in the environment which would soon affect
Mr.He.too. That phenomenon is why it's so hard to make a practical
Quantum Computer, and why you need to cool things down** to a
thousandth of a degree above absolute zero or less and make use of
quantum error correction.
*
It's quite easy to isolate mr. he from the result. Quantum computers
are hard to isolate from the environment affecting them, not vice versa
and not from the result.
Brent*
*
**
*John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
*.,-
*
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