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Re: [ontology-summit] First Model Bench Challenge

To: "'Ontology Summit 2012 discussion'" <ontology-summit@xxxxxxxxxxxxxxxx>
From: "doug foxvog" <doug@xxxxxxxxxx>
Date: Tue, 8 May 2012 15:31:06 -0400
Message-id: <ed4ff1ded983ef4d4abdf66d28d4efa7.squirrel@xxxxxxxxxxxxxxxxx>
On Tue, May 8, 2012 03:51, Matthew West wrote:
> doug foxvog wrote:    (01)

>> A class such as Person, Planet, or Country arguably also has different
>> members at different times.  However, some philosophers (especially
>> four-dimensionalists) would claim that the membership of such classes
>> does not change, merely the state of existence of its members change.    (02)

> MW: That's not quite right. Actually, the argument is that because
> individuals are spatio-temporal extents, you view them from outside time,
> and that is why the membership of classes like Person does not change    (03)

You are stating in more depth what i tried to say succinctly.  I was not
trying to explain 4D philosophy.  You explain it well.    (04)

-- doug foxvog    (05)

> (which strictly would only contain the set of whole-life Persons,
> otherwise you do
> not get the right count, which would be of all persons who ever have, and
> ever will exist). The spatio-temporal extents are considered to exist
> simpliciter independent of time. You can of course also have the class
> "Persons alive at 2012-05-08 21:52:00".
> Regards
> Matthew West
> Information  Junction
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>    (06)

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