On Sunday, November 17, 2019 at 4:36:13 PM UTC-6, Brent wrote:
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> On 11/16/2019 11:39 PM, Philip Thrift wrote:
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> On Saturday, November 16, 2019 at 4:45:56 PM UTC-6, Brent wrote:
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>> On 11/16/2019 2:38 PM, Philip Thrift wrote:
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>> On Saturday, November 16, 2019 at 10:54:06 AM UTC-6, Brent wrote:
>>>
>>> The epistemic interpretation just says the wf is our mathematical
>>> representation of what we know about reality.
>>>
>>>
>> If that is the definition of epistemic, then any mathematical physics is
>> epistemic ("ur mathematical representation of what we know"):
>>
>>
>> It is the definition of epistemic. And it is in contrast to the ontic
>> interpretation of QM which says that the wave function is real and changing
>> it due to a measurement must be described a some physical process, not just
>> taking the measurement into account to update our knowledge.
>>
>> Brent
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> From an applied mathematics perspective, it seems that *Schrödinger
> equation*, *Einstein equations*, *Maxwell's equations*, ... are all tools
> for making predictions about measurements, whether those measurements are
> made by lab instruments or telescopes.
>
> I don't see where a philosophically metaphysical and esoteric term like
> "knowledge" comes in in any of those equations.
>
>
> It comes into QM because it's probabilistic. If you wrote Maxwell's
> equations for the field produced by charged particles whose position was
> only given by a probability density function you would get a probabilistic
> prediction and when you measured the field at a few points and got definite
> answers, you would change you prediction of the field so that it matched
> the measurements at those points. Your knowledge of the field would still
> not be definite but it would have changed due to the measurement.
> Schrodinger's equation only predicts probabilistic measurement results, so
> it's always like that.
>
> Brent
>
Just because one formulates stochastic vs. deterministic models doesn't
mean "knowledge" has any special place in one type vs. the other,
I took a course in stochastic differential equations
https://en.wikipedia.org/wiki/Stochastic_differential_equation
and I don't think the philosophical subject of "knowledge" came up in any
special way vs. the subject of (deterministic) differential equations.
@philipthrift
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