On 1/20/2014 12:42 AM, Bruno Marchal wrote:
On 19 Jan 2014, at 22:31, meekerdb wrote:
On 1/19/2014 9:45 AM, Bruno Marchal wrote:
But why should that imply *existence*.
It does not. Unless we believe in the axioms, which is the case for elementary
arithmetic.
But what does "believe in the axioms" mean. Do we really believe we can *always* add
one more? I find it doubtful. It's just a good model for most countable things. So I
can believe the axioms imply the theorems and that "17 is prime" is a theorem, but I
don't think that commits me to any existence in the normal sense of "THAT exists".
Because you are chosing the physicalist ostensive definition of what exists, like
Aristotelians, but you beg the question here. The point is that, in that case, you
should not say "yes" to the doctor.
Why not. The doctor is going install a physical prosthetic. As you've agreed before, it
will not be *exactly* like me - but I'm not exactly the same from day to day anyway.
Brent
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