On 2/13/2025 4:57 AM, John Clark wrote:
On Wed, Feb 12, 2025 at 5:41 PM Brent Meeker <[email protected]>
wrote:
*>> Schrodinger's Equation is 100% deterministic, so why is it
necessary to resort to probability at all?*
>///Because one thing of many possible happens./
*Why is that "one" thing special? I can answer that; because it's not
special, many things happen, everything that is not forbidden happens.
You have no answer to that question other than "because it is".
*
The only thing special about is that it's the one that happened. If
everything not forbidden happens then you're going to need to explain
what probabilty means.
/> I can write an equation for the toss of die that shows that the
probability of each face is 1/6. That equation is deterministic.
It determines probabilities. And probabilities tell you that some
things happen and some don't. Not that every face of the die
comes up on every throw./
*Schrodinger's equation producesa complex-valued wave that evolves in
time, the square of the absolute value of the amplitude of that wave
determines probabilities.You just take the Born Rule as a given
because experimenters tell you that it works. Many Worlds can tell you
_why_ it works and why you need it.
*
So you say. But all attempts to derive it, assuming MWI, have failed.
I look forward to your paper.
*And unlike Schrodinger's Equation your dice equation directly
determines a probability*
Not as directly as Schrodinger's equation determines QM proability
amplitudes.
*; classical physics doesn't have or need a counterpart to the Born
Rule (although the square of the absolute value of an electromagnetic
wave is proportional to its energy). Classical physics can provide us
with an excellent approximation of how the orientation of the die will
change in time, so why do we need to use probability? The reason for
that is practical not fundamental, sometimes in classical physics tiny
changes in initial conditions lead to exponentially diverging
trajectories over time, and you're never going to know the initial
conditions exactly, and even if you did you don't have the computing
capacity to use them.*
/> And you have no answer to what probability means, until you
resort to "uncertainty of self-location",/
*Resort to? If I'm not allowed to give the correct answer then my
answer is going to be wrong. Many Worlds says everything always obeys
Schrodinger's equation including the observer, therefore there will
always be self-location uncertainty, it can't be avoided. *
And how does that result in uncertainty, when you are located in every
branch. It's just the problem of what does probability mean when
everything happens. You're just pushing the problem around.
Brent
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