On 7/8/2025 4:15 PM, Bruce Kellett wrote:
On Wed, Jul 9, 2025 at 3:42 AM Quentin Anciaux <[email protected]> wrote:
AG,
The key difference is that in MWI, all possible settings and
outcomes actually happen in different branches. Nothing selects
just one in advance.
So yes, everything evolves deterministically, including the
experimenters, but there's no global constraint forcing a single
outcome to match hidden variables.
In superdeterminism, only one setting and one outcome ever happen,
and they're pre-correlated to fake the quantum violation.
MWI doesn't need that. It just lets every allowed outcome unfold,
no conspiracy required.
But MWI still can't account for correlations that violate the Bell
inequalities.
Bruce
Why do you say that, Bruce? The standard story is that the two
entangled particles share a single variable in Hilbert space and that's
why one measurement determines both variables. I think that makes the
Hilbert space epistemic, rather than ontic as the MWI advocates would
have it
Brent
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