[extropy-chat] Identity (was: Survival tangent)

[John K Clark]

"Ian Goddard" <iamgoddard at yahoo.com> Wrote:

> the definition of 'identity' in logic matches
> Leibniz's Identity of Indiscernibles.

Leibniz's  Identity Of Indiscernibles is the idea that if you exchange the 
position of two things and there  is no change in the system then the
two things are the same. If I place you (the copy) and the original an
equal distance from the center of a symmetrical room so you see the 
same things and then instantly swap your bodies position with the 
original then neither you nor the original nor any outside observer 
could detect the slightest change. There was no change because 
although there were 2 bodies in the room there was only one person.

   John K Clark