Hi Brent

>> This is true, but it's also something Bruno has said many times. If comp is 
>> correct (to the extent that the mind is a computation, at least) then this 
>> is happening all the time. Heraclitus was right, you aren't the same person 
>> even from one second to the next.

I think Heraclitus meant that it is through change that some things remain the 
same. Thus the river stops being the river if it doesn't flow. Or the human 
body has an underlying form and structure that gets maintained as the 
constituent matter comes and goes. It is the abstract relationship between 
elements that constitutes identity rather than the elements themselves. I would 
think this reading of Heraclitus is more palatable to Bruno given he is a 
neo-patonist. I would have thought Bruno would want identity between successive 
steps of 'the program' to be maintained, otherwise, as you do, he would really 
be denying a role to an underlying form in the natural numbers from which 
'shadows of us' are derived.

In any case Bruno really asserts that identity is maintained in comp. This is 
the essence of the 'yes doctor' axiom which he violates in step 3.


>> I think he's resisting Bruno's point because he sees it as assigning a 
>> probability.

Well he would be right to. This is from Bruno's step 3 where he explicitly 
assigns probability:

"This is what I call the first person comp indeterminacy, or just 
1-indeterminacy. Giving that Moscow and Washington are permutable without any 
noticeable changes for the experiencer, it is reasonable to ascribe a 
probability of ½ to the event “I will be in Moscow (resp. Washington).”

All the best

Date: Sun, 6 Oct 2013 17:45:48 -0700
From: [email protected]
To: [email protected]
Subject: Re: What gives philosophers a bad name?


  
    
  
  
    On 10/6/2013 1:48 PM, LizR wrote:

    
    
      
        
          On 7 October 2013 06:48, John Clark <[email protected]>
            wrote:

            
              
                On Sun, Oct 6, 2013 at 3:43 AM, Bruno
                  Marchal <[email protected]>
                  wrote:

                
                
                  

                  
                    
                      
                        > The M-guy
                          is the H-guy  (the M-guy remembers having been
                          the H-guy)

                        
                      
                       
                    
                    The  H-guy turns into the M-guy, but they are
                      not identical just as you are not identical with
                      the Bruno Marchal of yesterday.

                    
                  
                
              
            
          
          

        
        This is true, but it's also something
          Bruno has said many times. If comp is correct (to the extent
          that the mind is a computation, at least) then this is
          happening all the time. Heraclitus was right, you aren't the
          same person even from one second to the next. I thought that
          was partly the point that Bruno's step 3 was making. If comp,
          then we exist as steps in a computation, and hence, at least
          in a sense, cease to exist and come back into existence
          constantly. Hence (if comp) we are at any given moment digital
          states can be duplicated, at least in principle, and could
          also be duplicated inside a computer (again in theory. The
          computer MAY have to be the size of a galaxy, or it may not -
          however the point is only to show what is possible in
          principle. Or is "in principle" itself objectionable?)

        
      
    
    

    

    JC should read this:
http://physics.stackexchange.com/questions/20802/why-is-gleasons-theorem-not-enough-to-obtain-born-rule-in-many-worlds-interpret

    

    I think he's resisting Bruno's point because he sees it as assigning
    a probability.

    

    Brent

    
      
        
          

        
        Arguing about which man is which or who
          thinks what seems a bit pointless. The question is, do you
          agree that if consciousness is computation, a duplicator of
          this sort is at least a theoretical possibility? (I can accept
          it, despite no-cloning, because the multiverse itself is
          apparently doing it constantly.)

          

        
      
      -- 

    
    

  





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