On 4/27/2017 1:29 AM, Bruno Marchal wrote:
If I say "yes" to the doctor, I am simply accepting that if the brain
is replaced by a completely equivalent device, then I will survive.
This is a matter of understanding the physics -- not a theological
matter.
The problem is that we can show that IF I am a machine, THEN I cannot
know which machine I am. So, incompleteness will justify that saying
"yes" to the doctor asks for a genuine leap of faith. It is a theology
in that sense.
To say "yes" to the doctor only requires that the doctor know the
physics of your construction ("at the right substitution level" as you
say). He doesn't need to know what algorithms that physics can
compute. So the "leap of faith" is just in the substitution level. And
from an engineering viewpoint, one may not be very concerned with
whether one's Godel sentence is changed from one to another by the doctor.
Brent
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