On 19 Aug 2009, at 10:36, Flammarion wrote:

>
>
>
> On 19 Aug, 01:29, David Nyman <david.ny...@gmail.com> wrote:
>
>> Bruno's position is that only one of the above can be true (i.e. CTM
>> and PM are incompatible) as shown by UDA-8 (MGA/Olympia).   I've also
>> argued this, in a somewhat different form.  Peter's position I think
>> is that 1) and 2) are both false (or in any case that CTM and PM are
>> compatible).  Hence the validity of UDA-8 - in its strongest form -
>> seems central to the current dispute, since it is essentially this
>> argument that motivates the appeal to arithmetical realism, the topic
>> currently generating so much heat.  UDA-8 sets out to be provable or
>> disprovable on purely logical grounds.
>
>
>> I for one am unclear on what
>> basis it could be attacked as invalid.  Can anyone show strong  
>> grounds
>> for this?
>
> Of course, no argument can validly come to a  metaphysical  
> conclusion--
> in this
> case, that matter does not exist --without making a single
> metaphysical assumption.


I completely agree with that point, but I don't see the relevance.  
Comp, alias CTM, is an hypothesis in cognitive science/philosophy-of- 
mind/metaphysics/theology. It is certainly not an hypothesis in  
mathematics. It relates the preservation of my consciousness through a  
substitution of my (generalized) brain ( a priori "material").

Bruno

http://iridia.ulb.ac.be/~marchal/




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