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Re: [ontolog-forum] Ontological Assumptions of FOL

To: "'[ontolog-forum] '" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Chris Partridge" <mail@xxxxxxxxxxxxxxxxxx>
Date: Tue, 20 Mar 2007 15:38:05 -0000
Message-id: <006201c76b05$c0d1ec60$6f00a8c0@Aegir>
> >Pat Hayes schrieb:
> >>
> >>  Well, I can see a lot of problems with this. If
> >>  you believe, for example, that all spatiotemporal
> >>  entities are in some sense physical, you will get
> >>  into trouble.
> >
> >Let me from my philosophical corner just add one long sentence: No
> >famous philosophical ontologist who posits physical (material) things in
> >space and time has argued that everything that exists in space and time
> >is physical (material); for instance, many claim that property instances
> >*inhere in* physical things, but this does not mean that these
> >spatiotemporal instances *are* physical entities.
> Possibly. Nevertheless, frankly, the opinion of
> famous philosophical ontologists on matters like
> this is of less interest than what actual written
> and deployed formal ontologies say about it. One
> can reasonably claim, and indeed ontologies have
> claimed, that anything spatiotemporal has a
> spatiotemporal extent, and any spatiotemporal
> extent contains a kind of physical stuff, so...    (01)

Are you sure this is phrased right. What about vacuums? Surely they do not
contain stuff - where stuff is material in the normal everyday sense. Or am
I missing something?    (02)

If this is what the ontologies claim - aren't they just wrong (or,
misguided, or ...)     (03)

I thought formal ontologists tended to equate concrete and spatio-temporal
rather than stuff and spatio-temporal. And that there tended to be little
more here that that concrete things were spatio-temporal.    (04)

> BTW, what exactly does 'inhere' mean? Apparently
> X may inhere in Y and Y have a quality that X
> lacks (physicality), so why does it follow that
> if X inheres in Y and Y is spatiotemporal, that X
> is spatiotemporal? (Probably we should take this
> offline, if you feel like replying :-)
> Pat
> >/Ingvar J
> >
Chris    (05)

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