Re: Fw: Something for Platonists

[Eric Hawthorne]

Lennart Nilsson wrote:

But in fact, the only thing that privileges the set of all
computational
operations that we see in nature, is that they are instantiated by

the laws of physics. It is only through our knowledge of the physical
   

world
 

that we know of the di.erence between computable and not computable. So

it's only through our laws of physics that the nature of computation can
   

be
 

understood. It can never be vice versa."
   

I don't agree. I think computability is a pure abstract property
describing the reachability of some states (or state descriptions)
from others via a set of incrementally different states (or
state descriptions). I think computability is tied to
notions of locality. But computability may define locality
and not the other way around.
Eric

--
   "We are all in the gutter,
    but some of us are looking at the stars."
         - Oscar Wilde