X-Message-Number: 25919
Date: Tue, 29 Mar 2005 14:48:58 EST
Subject: clarification

Not that it's important, but a slight correction to something I said a  

couple of days ago--that, in principle, a (mathematical) model of any physical

condition or process is possible, to any desired degree of accuracy, even using
just a Turing tape.
A better statement is that, in principle, a digital computer algorithm can  
describe any physical condition or process, to any desired degree of  

accuracy--if you have the requisite information to begin with, including  
complete and 
perfect knowledge of the laws of physics.
This means that the possibilities of uploading are speculative at  best--even 
if you buy the "information paradigm" which identifies the  thing with its 
Robert Ettinger

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