On Wed, Feb 19, 2014 at 08:06:31PM -0800, meekerdb wrote:
> 
> I think we're talking past one another.  You're talking about
> ontology as the ur-stuff that's really real.  I'm talking about the
> stuff that is assumed as fundamental in a theory.
> 
> Brent
> 

Yes, to me an ontology is a statement about what's really real. The
ur-stuff, as you say.

I've never heard of ontology as something that any theory has. What
does information theory have as an ontology, for example? It certainly
makes no claims about existence.

Possibly you are using ontology in the sense defined by Tom Gruber?
http://www-ksl.stanford.edu/kst/what-is-an-ontology.html 

If so, then that is a completely different word, that just happens to
sound the same and have the same spelling. Certainly, any theory will
have a collection of undefined referrents - in formal theories these
would b called the axioms. It looks like in some circumstances,
"ontology" refers to these collections.

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