Re: What is the most plausible FTL/Hyper/Warp Drive that you come accross?

"Wayne Throop" <throopw@xxxxxxxxx> wrote in message
news:1137360675@xxxxxxxxxxxx
> : "Logan Kearsley" <chrono.surfer@xxxxxxxxxxx>
> : And yet, people usefully apply statistics to classical, non-QM phenomena
> : everyday, to account for uncertainties in their measurements of initial
> : conditions.
>
> Yes. And this is relevant why, exactly?

Because I'm trying to make it clear that I'm not talking about probability
as if it is a real property of the universe (in the absence of QM). I'm
talking about probability as an tool for predicting what might happen in the
future, in...

> : I'm not saying that QM will not influence the probabilities of events,
> : just that it is not necessary to invoke it as an explanation of why
> : some events that can be imagined as a result of FTL travel have zero
> : probability. Having acknowledged that QM is not absent, absent QM: If
> : you have some way of determining the exact initial conditions, and a
> : complete set of physical laws, you could predict exactly what is going
> : to happen, and if your set of laws is correct, you must always find
> : that your prediction is self consistent.
>
> There *is* no "probabilities of events", there is only ignorance
> of the initial conditions. If the initial conditions are known,

....exactly that sense.

> there is no "probability" involved. Which leads to the second point,
> which is that you've only shown that your laws of physics don't
> actually model what's going on... so why are you trusting them
> to predict time machines in the first place?

I disagree. I think what is shown is that either your laws of physics don't
apply, OR a particular measurement of initial conditions must be false.
Since, even in the absence of QM, sufficiently detailed measurements of
initial conditions as to allow perfect prediction of the future are likely
to be practically impossible, and thus the concept of 'probabilities of
events' is useful, then one can use self inconsistency to say 'this can't
happen, ergo, one of the other possibilities, no matter how unlikely, must'.
To attempt to put it more simply: in the absence of QM, initial conditions
that would lead to paradoxes cannot exist. In the presence of QM, any events
which lead to self inconsistency have zero probability, and so something
else must happen.

-l.
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