Re: Minds, Machines, and the Multiverse

From: Dana Hedberg (
Date: Wed May 03 2000 - 19:48:11 MDT

Matt Gingell wrote:
> > > Imagine I could simulate, in real time, a system of 100 atoms using 50
> > > atoms. I can then have two groups of 50 running in real time with perfect
> >
> >Of course, you can't do that. Also, you don't mention which modelling
> >paradigm you're contemplating, say QM or MD.
> Exactly - it's like thinking you could emulate a P2 on a P2 and end up with
> something faster. The implication therefore is that you can't model the whole
> universe in anything smaller than the whole universe, which is why I don't
> understand why someone would claim you could simulate everything with a star.
> Given the constraint of perfect fidelity (if indeed that means anything), then
> which paradigm you work in is just a bookkeeping issue.
> -matt

Ok, I have a question that is leaving me confused. What exactly is the
role of compression within simulation situations? If I can represent
(i.e., model) a set of information perfectly with a compressed form of
that information, then haven't I modeled something larger with something

For example: I can model 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 with 2 *
5. I've compressed a ten digit, multiple addition operation with a
single multiplication of two digits operation.

This would then seem to scale up for many things, indeed, even to the
size of the universe. Is there something I'm missing here?


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