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Re: [ontolog-forum] Discussion re reasoning about Time and State with RE

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Obrst, Leo J." <lobrst@xxxxxxxxx>
Date: Sun, 24 Aug 2014 00:19:55 +0000
Message-id: <FDFBC56B2482EE48850DB651ADF7FEB035271814@xxxxxxxxxxxxxxxxxx>
John,    (01)

What we try to do is impossible, no? And so, let's just give up, eh?    (02)

Leo    (03)

>-----Original Message-----
>From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx [mailto:ontolog-forum-
>bounces@xxxxxxxxxxxxxxxx] On Behalf Of John F Sowa
>Sent: Thursday, August 21, 2014 9:06 AM
>To: ontolog-forum@xxxxxxxxxxxxxxxx
>Subject: Re: [ontolog-forum] Discussion re reasoning about Time and State with
>REST interfaces
>Dear Ed and Matthew,
>> There is no good model for all problems.
>That is the understatement of the year.
>I would add that even for a single project -- say designing
>an airplane, a house, or a computer -- there are a huge number
>of problems that require different models.  And those models
>are *rarely, if ever* consistent with one another when you
>get down to the grubby details of each.
>> The important thing to take from this is not that it is too
>> difficult, but that you need to think about how time relates
>> to the requirements you are trying to meet, and make sure
>> you have a model that is fit for purpose. A particularly bad
>> approach is to start with a current state model and then try
>> to add change, history and time later.
>For any particular model, that's true.  But note that even for
>designing a house (a typical one-family home), there are a large
>number of different models.  All of them have to be consistent
>(to a good approximation) with the map drawn up by the surveyor
>and the blueprints drawn up by the architect.
>But all the subcontractors come with their own models (usually
>mental):  plumbers, electricians, carpenters, landscapers,
>excavators, etc.  Try discussing identity conditions with them.
>A blank stare is preferable to some remarks they might make.
>Now multiply those issues by thousands, if you're trying to
>design a Boeing 787 or Airbus 380.  It's no wonder that those
>projects weren't finished on time and within budget.
>By the way, I attended a talk last week about data mining in
>bioinformatics.  The speaker said that he talked with many of
>the physicians at a large, modern hospital.  None of them had
>heard anything about ontology or the related terms that we
>kick around on this list.
>If they happen to choose a formally defined term from a menu,
>what is the likelihood that their intended use is consistent
>with the formal definition?
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>    (04)

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