# Re: The multiverse is unscientific nonsense??

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On 11/29/2023 5:46 PM, Jason Resch wrote:
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On Wed, Nov 29, 2023, 8:39 PM Bruce Kellett <bhkellet...@gmail.com> wrote:

On Thu, Nov 30, 2023 at 11:59 AM Jason Resch
<jasonre...@gmail.com> wrote:

On Wed, Nov 29, 2023, 7:17 PM Bruce Kellett
<bhkellet...@gmail.com> wrote:

On Wed, Nov 29, 2023 at 10:49 PM Stathis Papaioannou
<stath...@gmail.com> wrote:

On Wed, 29 Nov 2023 at 12:34, Bruce Kellett
<bhkellet...@gmail.com> wrote:

On Wed, Nov 29, 2023 at 12:02 PM Stathis
Papaioannou <stath...@gmail.com> wrote:

The Born rule allows you to calculate the
probability of what outcome you will see in a
Universe where all outcomes occur.

You are still conflating incompatible theories.
The Born rule is a rule for calculating
probabilities from the wave function -- it says
nothing about worlds or existence. MWI is a theory
about the existence of many worlds. These theories
are incompatible, and should not be conflated.

“The Born rule is a rule for calculating probabilities
from the wave function -- it says nothing about worlds
or existence”  -and- “MWI is a theory about the
existence of many worlds” are not incompatible statements.

Perhaps that is the wrong way to look at it. The linearity
of the Schrodinger equation implies that the individuals
on all branches are the same: there is nothing to
distinguish one of them as "you" and the others as mere
shadows or zombies. In other words, they are all "you". So
you are the person on the branch with all spins up and
your probability of seeing this result is one, since this
branch certainly exists, and, by linearity, "you" are the
individual on that branch. This is inconsistent with the
claim that the Born rule gives the probability that "you"
will see some particular result. As we have seen, the
probability that "you" will see all ups in one, whereas
the Born probability for this result is 1/2^N. These
probability estimates are incompatible.

According to relativity you exist in all times across your
lifespan (and all times are equally really). Yet you are only
ever aware of being in one time and in one place. I think this
tells us more about the limitations of our neurology than it
reveals about the extent or nature of reality. If a copy of me
is created on Mars, the me know Earth doesn't magically become
aware of it.

And how do we select out the present moment from the block universe?

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I believe all apparent selections are merely indexical illusions. 'Here' is no more real than 'There', 'Now' is no more real than 'Then', 'I' is no more real than 'Him'. We only consider these things special due to the position we happen to be in at the time a consideration is made, but all such considerations exist and are equally valid. All 'Heres' are real, all 'Nows' are real, all points of view are 'Is'. Only, as Shrodigner says, we aren't in a position to survey them all at once.
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But if somebody drops a bomb on there and you're here and not there you may find it makes  a difference.
```
Brent

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