EmeraldBeetle
Your text:
"A third, theoretical, view is that of the Super Observer (SO). This entity would exist outside ΨU looking
in. From this idealised god’s view, ΨU is a global description of a superposition in which all possible ‘worlds’
coexist.
The distinction between the internal RSO and an abstract SO is fundamental to my argument. "
This is what was debated. You say yourself it is fundamental. This ideal God is infinite and ethernal what I can understand.
on p 5:
"The Schrodinger dynamics of any isolated system, such as ΨU, is unitary. Amplitudes ci give outcomes with
typical long-run frequencies tracking |ci|2 as per Born’s rule. What differs across interpretations is ontology,
not the phenomenology of a single experienced outcome:
• EO(external, empirical-classical): only one observable outcome occurs. Born gives a primitive chance
via non-unitary, ad-hoc collapse.
• RSO (relative-state, empirical-phenomenal): all outcomes are real but only one is observed along a
single, decohering branch. Born is an objective measure fixed by the branching correlation structure
of ΨU.
• SO(external, global): all outcomes are real and Born is a measure over branches.
From the SO view, consider three Alices in parallel branches measuring the spin of an electron, all in state
[Ready] prior to (2)
• AliceEO believes the collapse postulate gives e↑ or e↓.
• AliceRSO believes her observational flux traces a singular continuity through a decohering structure,
giving e↑ or e↓.
• AliceSO believes that she will split into two versions of her present self with their worlds differing only
by spin, giving both e↑ and e↓.
Post measurement interaction but prior to seeing UP or DOWN (3), our three Alices become six:
• Two AliceEO continue to endorse collapse.
• Two AliceRSO are focused on their current empirical branch trajectory and its measurement outcome
as a continuity of their observational flux.
• Two AliceSO face self-location uncertainty and lean on symmetry and rational-consistency principles
to assign probabilities to quasi-classical outcomes via the Born rule [12, 13, 14]. "
You should know what is Born rule, you write it as digital or quantized. I guess a singular continuity is a simple branch or analog?
What if Alice branch into 3 or 5 branches? Note that AliceSO is OUTSIDE the worlds. She cannot have impact on the electrons?
Ulla.
