[ExI] Google’s Willow Quantum Chip: Proof of the Multiverse?

[Jason Resch]

On Fri, Oct 10, 2025 at 2:17 PM John Clark via extropy-chat <
extropy-chat at lists.extropy.org> wrote:

>
>
> On Fri, Oct 10, 2025 at 11:55 AM Adrian Tymes via extropy-chat <
> extropy-chat at lists.extropy.org> wrote:
>
> *> Saving people a click: no, it is not proof of the multiverse.*
>>
>
> *Nobody is claiming it's proof that the multiburst exists, but it is
> consistent with it and it's the easiest way to form a mental picture of
> what's going on, and that's important if you intend to write programs for
> quantum computers. That is one reason among many that I think Many Worlds
> is the best bad quantum interpretation, and if it isn't true then something
> even weirder is. *
>
>
It is proof of a multiverse for the following reason: unless one is willing
to go so far as to admit there are effects without causes (which is magical
thinking in my view) then the only way to explain how the correct answer
ends up in the registers of a computer following a quantum computation is
to admit the reality of the wave function, and all the intermediate steps
of the computation. But if those are real, then a mind uploaded to such a
quantum computer would directly experience a multiplicity of states (a
multiverse) and by coupling that mind's many states to the result of
something like Shor's algorithm, we could likewise confirm that the reality
of the multiplicity of all the intermediate states, which would have had to
exist for the computation to provide the correct answer when we go to
observer it. Now consider: the only thing that allows the multiverse to
exist for the mind on the quantum computer is the fact that it remains
perfectly isolated from its outside environment during its observation. But
then consider: your brain remains perfectly isolated from the outside
environment for some period of time *t*. Where the outside is a spherical
border of space centered on you, with a radius of (*t* * *c*). So life as
we know it in this universe is in principle, no different from life of a
mind uploaded to a quantum computer. And the existence of computations
which cannot be accounted for in any way other than by accepting the
reality of the intermediate steps of the quantum computation provide direct
evidence of this.

If anyone knows a way of avoiding this conclusion, please share it, as I
have not seen one.

Jason
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