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Re: [ontolog-forum] OWL and lack of identifiers

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Patrick Durusau <patrick@xxxxxxxxxxx>
Date: Sun, 15 Apr 2007 07:39:58 -0400
Message-id: <46220F0E.2050702@xxxxxxxxxxx>
John,    (01)

On a road trip with spotty email access but I did want to respond to one 
of your points:    (02)

John F. Sowa wrote:    (03)

>This discussion raises some serious issues:
>  1. For physical objects, names are not unique because
>     two different objects can have the same name.
>  2. However, the laws of physics guarantee that no
>     two physical objects can fill the same physical
>     volume at the same time.  Therefore, space-time
>     coordinates can serve as unique identifiers.
Yes, but would you agree that there is no one universal space-time 
coordinate system such that any physical object could have two or more 
unique identifiers in different coordinate systems?    (04)

Thinking of the star charts used by the South Sea Islanders for 
navigation over long sea journeys. While they 'identify' the same 
physical objects as a modern star chart, they are hardly the same 
coordinate system.    (05)

Hope you are at the start of a great week!    (06)

Patrick    (07)

--     (08)

Patrick Durusau
Chair, V1 - Text Processing: Office and Publishing Systems Interface
Co-Editor, ISO 13250, Topic Maps -- Reference Model
Member, Text Encoding Initiative Board of Directors, 2003-2005    (09)

Topic Maps: Human, not artificial, intelligence at work!     (010)

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