[ExI] teachers

[Adrian Tymes]

On Mon, Aug 28, 2023 at 9:53 PM Jason Resch via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

> On Tue, Aug 29, 2023, 12:14 AM Adrian Tymes via extropy-chat <
> extropy-chat at lists.extropy.org> wrote:
>
>> On Mon, Aug 28, 2023 at 8:26 AM Jason Resch via extropy-chat <
>> extropy-chat at lists.extropy.org> wrote:
>>
>>> I also disagree with the assessment that MW is not falsifiable. If we
>>> run a conscious mind on a quantum computer, and the quantum computation
>>> fails due to the consciousness of the mind on the computer causing
>>> collapse, and it eliminates the interference pattern, then MW is falsified.
>>>
>>> Here is David Deutsch's description of the experiment:
>>> https://photos.app.goo.gl/4rrNMdbmSsHGsLkh9
>>>
>>
>> How is MW falsified in this case?  There can exist events which are the
>> same in all worlds that had the same starting condition,  and we would
>> never  know.
>> ______________________________
>
>
> It's only falsified if the interference pattern isn't restored after
> quantum erasing the conscious observer's mind.
>
> Collapse theories say collapse happens by the time or during conscious
> observation, and that it is irreversible and destroys the interference
> pattern.
>
> MW on the other hand does not say (apparent) collapse is irreversible, but
> that everything is linear, continuous and time reversible.
>

What about MW says things are time reversible?  If things are time
reversible, then worlds could be reversed back past the point where they
branched off, which would seem to counter the basis of MW: separate worlds
don't exist as separate worlds until after they branch.

But, setting that aside for the moment...


> It's just hard for normal macroscopic systems to be reversed, hence why it
> is done on a quantum computer which can be completely controlled and leaks
> no information to the environment.
>
> So if we can fully reverse the system after a conscious observation is
> made, and erase the which-way information concerning the measurement, then
> the interference pattern should be recovered, confirming MW and ruling out
> collapse as any kind of objectively real phenomenon.
>

Demonstrating that collapse can be reversed would rule out irreversible
collapse, but reversible-collapse MW is not the only theory of reversible
collapse.

Also, how does one "quantum erase" a quantum computer while retaining
its measurements (and thus confirming that collapse has happened, without
which one can't be sure if a subsequent lack of collapse is in fact a
reversal)?  If a collapse is subsequently observed, can't one simply claim
the erasure hasn't happened?
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