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Re: [ontolog-forum] Ontology and methodology

To: "Smith, Barry" <phismith@xxxxxxxxxxx>
Cc: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Pat Hayes <phayes@xxxxxxx>
Date: Tue, 20 Mar 2007 16:51:41 -0500
Message-id: <p0623090bc22606a127e8@[]>
>  >Matthew:
>>Since a Person is a maximal Person_Slice (though I would prefer
>>state_of_person to person_slice) ...
>So presumably by substitution we have also that a maximal
>Person_Slice is a maximal maximal Person_Slice_Slice, or
>maximal <maximal Person_Slice>_Slice
>if Matthew prefers.
>Oh what a merry web we weave.
>BS    (01)

Slice, or 'episode' as I now prefer, just means 
temporal-part-of. So the principle that Matthew 
states is that anything is equal to its maximal 
part, which is another way of saying that part-of 
is reflexive. This seems a harmless mereological 
convention to adopt (it presumably motivates the 
idea of a proper part, i.e. a part which is not 
maximal.)    (02)

So yes, the maximal part of the maximal part of 
... (as many times as you like) ... of X, is X. 
Its like saying the largest subset of the largest 
subset of ... X, is X; which of course is true, 
though not particularly useful.    (03)

Pat    (04)

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