On 30 Apr 2014, at 04:24, Russell Standish wrote:
On Tue, Apr 29, 2014 at 04:19:01PM -0400, Jesse Mazer wrote:
The MWI advocate David Deutsch had a quote about choices and
morality in
the article at
http://www.newscientist.com/article/mg17122994.400-taming-the-multiverse.htmlwhich
made sense to me:
"By making good choices, doing the right thing, we thicken the
stack of
universes in which versions of us live reasonable lives. When you
succeed,
all the copies of you who made the same decision succeed too. What
you do
for the better increases the portion of the multiverse where good
things
happen."
Jesse
Makes no sense to me. You do not "thicken the stack of universes", nor
do you "increase the portion of the multiverse where good things
happen". The Multiverse just is - proportions do not change because of
choices of inhabitants.
But they relative accessibility does, from inside. In QM they are
weighted by the square of a scalar product, and in comp, by the self-
referential constraints.
Rather, I think decision theory should be based on "what choices (of
measurement) do I make such that the most likely outcome (that I
observe) is 'good', and 'bad' outcomes are unlikely (to be observed)".
David Deutsch seems to be badly conflating the static block multiverse
picture with a dynamic einselectionist picture.
I guess he confuses the 3p []p, and the inside 1p views like []p & p,
[]p & <>t & p.
Cue the obvious response from John Clark that "free will is
meaningless
noise", and so consequently is decision theory :).
Which is meaningful to God, or from the 0p view, but makes no sense
from inside.
Best,
Bruno
----------------------------------------------------------------------------
Prof Russell Standish Phone 0425 253119 (mobile)
Principal, High Performance Coders
Visiting Professor of Mathematics hpco...@hpcoders.com.au
University of New South Wales http://www.hpcoders.com.au
Latest project: The Amoeba's Secret
(http://www.hpcoders.com.au/AmoebasSecret.html)
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