Re: Computer Models of the Universe and Special Relativity

Dirk Van de moortel wrote:
> "MobyDikc" <mobydikc@xxxxxxxxx> wrote in message news:1134674093.506343.270120@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > Dirk,
> >
> > > Spacetime and events are independent of those who observe it.
> >
> > So, putting this into the context of a computer simulation, would
> > spacetime be the rules and the events be the initial conditions?
>
> No. Spacetime is the set of events.


Which means, in the context of a computer simulation, that spacetime is
part of the rules.

And the rules are indepedent of the observer. But for the rules to
actually produce a computer simulation, there needs to be initial
conditions.

The initial conditions are relative measurements.


In such a computer simulation, the only measurements accounted for are
those of the observer and those you can deduce from the those
measurements. In the case of another observer outside of the simulated
observer's light cone, you can't make those calculations.

So my point stands: while spacetime itself may account for all
observers given initial conditions for all observers, no single set of
observer indepedent initial conditions can produce a simulation that
accounts for the measurements of all observers.

That's trivially true because a single set of observer indepedent
inital conditions would imply an absolute reference frame, which
special relativity banishes.

.

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