[ExI] Many Worlds (was: A Simulation Argument)

[scerir]

John Clark writes
> > We've known for 70 years that you can instantly change
> > something 10 billion light years away,

Lee Corbin writes
> Not if you look at this through MWI lenses.

Isn't there some nonlocality also in MWI?
I mean, the very concept of 'split'
is a sort of Godiva supreme chocolate 
ice-cream of nonlocality.

Also Lev Vaidman [1] seems to think so.
"The MWI exhibits some kind of nonlocality: 
"world" is a nonlocal concept, but it avoids 
action at a distance and, therefore, it is not 
in conflict with the relativistic quantum mechanics; 
see discussions of nonlocality in Vaidman (1994), 
Tipler (2000), Bacciagaluppi (2002), and Hemmo and 
Pitowsky (2001). Although the issues of (non)locality 
are most transparent in the Schroedinger
representation, an additional insight can be gained 
through recent analysis in the framework of the 
Heisenberg representation, see Deutsch and Hayden
(2000), Rubin (2001), and Deutsch (2001). The most 
celebrated example of nonlocality was given by Bell 
(1964) in the context of the Einstein-Podolsky-Rosen 
argument. However, in the framework of the MWI, Bell's 
argument cannot get off the ground because it requires 
a predetermined single outcome of a quantum experiment."

How to solve this problem, at least from a very abstract
point of view? See [2] :-)

[1]
http://physicaplus.org.il/zope/home/en/1105389911/1112196342-vaidman_en
[2]
http://physicaplus.org.il/zope/home/en/1185176174/daat_ophir_en