Note that one might also debate on the nature of 'enzyme', is that a protein,
or a role that can inhere in a protein? (01)
-----Original Message-----
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx]On Behalf Of David
Decraene
Sent: maandag 19 maart 2007 15:27
To: [ontolog-forum]
Subject: Re: [ontolog-forum] Ontology and methodology (02)
>FP> Why should employee be a role while chair is not? (03)
>For very good reasons: a chair can be recognized by the
>properties it has in itself without looking at anything else
>(but one can use things that are not chairs *as* a chair).
>But you can't tell whether a person is an employee without
>considering something else. See the KR book for a discussion
>of Firstness, Secondness, and Thirdness. (04)
>John (05)
To add to the discussion:
It might be hard to recognize a transferase (kind of enzyme) by the properties
it has, but maybe not impossible, so we enter the grey zone there, is it a
role, or an actual enzyme characterized by the possible role/function it (can)
bear?
Simply said, identifying whether something is a 'natural kind' or a role might
be very hard in some cases and completely depends on the level of granularity
of your ontology or the background of the modeler. (06)
David (07)
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