From: Anders Sandberg (asa@nada.kth.se)
Date: Wed Feb 12 2003 - 02:27:55 MST
On Tue, Feb 11, 2003 at 05:50:46PM -0800, Lee Corbin wrote:
> Anders writes
>
> > Note that the MWI also contains the unlikely worlds, including
> > truly bizarre "hell spaces" where there is no order at all.
> > But the probability of finding oneself in such a world is
> > vanishingly small due to decoherence,
>
> Do you mean the same thing as: whereas there is some low probability
> that I will find myself being tortured by Colombian Narco-dealers,
> there is a vanishingly low probability that I will find myself in
> a completely incoherent world (for one thing, I would suffocate
> immediately)?
Exactly. The worlds where object tunnel around randomly are highly
improbably compared to the worlds where objects and people behave
more or less as usual (Colombian narco-dealers are classical
objects; in a too quantum world they would not have a market
anyway.)
> > The mass issue is not really an issue. When a system is in a
> > superposition of states (let's say a 4 kg living cat state
> > together with a 4 kg dead cat state in a Schrodinger box)
> > the total mass doesn't increase to 8 kg.
>
> Quite right. And the way to see this is to imagine that a
> sheaf of a thousand pieces of paper has bifurcated to two
> sheets of five hundred pages each. In other words, universes
> become distinguished.
>
> (Speaking about "splitting of worlds" sometimes has the
> drawback of giving rise to notions of increase in quantity.)
Yes, the MWI really doesn't say anything about that. Tegmark
explained it nicely in the later part of the paper; the
multiverse of the MWI is really just a single huge block of
worlds dividing and merging. Of course, it may be that
classical paths merge much less, their probability sustained
by the inflow of lots of improbable chaos-worldlines that
suddenly stop being crazy.
-- ----------------------------------------------------------------------- Anders Sandberg Towards Ascension! asa@nada.kth.se http://www.nada.kth.se/~asa/ GCS/M/S/O d++ -p+ c++++ !l u+ e++ m++ s+/+ n--- h+/* f+ g+ w++ t+ r+ !y
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