Bruno Marchal wrote:
> Le 18-août-06, à 17:38, 1Z a écrit :
>
> > That is an explanation of mind-independence, not of  existence.
> > The anti-Platonist (e.g. the formalist) can claim that
> > the truth of mathematical statments is mind-independent,
> > but their existence isn't.
>
>
> "Their" existence ? Mathematical statements needs "chatty" machines.

Mathematics proceded for centuries without any machines at all.

> Mathematical truth, a priori doesn't (although "free structures" can
> feature some chatty aspects many times).
>
> Let us make the following convention. When I will say "I believe there
> exist a perfect number", it is a shorter expression for, I believe the
> proposition "There is a perfect number" is true (satisfied in (N,+,*))
> independently of me, or of any theory of cognition. (A good thing,
> giving that a theory of cognition is build *from* digital machine, that
> is from number theoretical relations).

If AR makes no existential commitments, it cannot lead
to the existential conclusion that there is no such thing
as matter.

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


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