[extropy-chat] Physics and simulations

[Alfio Puglisi]

On Sat, 8 Nov 2003, Chris Phoenix wrote:

>If I were implementing a simulation of the universe, I wouldn't use the
>same level of granularity everywhere.  Instead, I'd make it fine-grained
>around the stars, and use a coarser matrix with similar (but obviously
>not identical) physics between them.  Dark matter?  Cosmological
>constant?  I wonder if we'll find that the Planck length is different
>Out There?  And obviously the wrap-around universe makes sense; wrapped
>boundaries are common in simulations.
>
>Getting really silly now...
>   "What the--hey, we've got a buffer overflow in this simulation."
>   "What happened?"
>   "Looks like something left the fine-grained area, but is
>communicating back into it about local conditions.  It's getting all
>tangled up."

Wasn't the Voyager 1 the spacecraft with some unexplained motion? I read
some report that, after taking into account the residual solar gravity,
heat dissipation, and about 10,000 known factors, the probe was
accelerating a bit different than predicted.

Ciao,
Alfio