On Tue, Sep 17, 2019 at 7:50 PM John Clark <johnkcl...@gmail.com> wrote:

> On Mon, Sep 16, 2019 at 7:57 PM 'Brent Meeker <
> everything-list@googlegroups.com> wrote:
>
>
>> >> Many Worlds could be called Austere Quantum Mechanics because it adds
>> nothing to Schrödinger's Equation because nothing more is needed to explain
>> observations.
>>
>>
>> * > You still need the Born rule, including its intepretation as a
>> probability.*
>>
>
> Every quantum interpretation needs the Born rule, but it comes pretty
> naturally. If you square the amplitude of the Schrödinger wave you
> automatically get numbers that are positive and unitary, that is the always
> add up to exactly 100%. And those are 2 properties a probability must have,
> negative probability has no meaning and there is always a 100% chance
> SOMETHING will happen.
>

The fact that the squared amplitudes add up to unity is not particularly
surprising when you have normalised the wave function! Showing that this is
a probability is a whole other kettle of bananas.

Bruce

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