Dear Simon,

Please keep in mind that we do not carry out linguistic interpretations in the CRM. How we define a class, here "feature", is only determined by an objective
behavior that allows useful conclusions in the target discourse.

Michael Jackson's nose was indeed immobile with respect to his head, just as mine. Immobility can only be seen wrt to the surrounding matter. The building is just immobile wrt the planet/landmass. If we talk about immobility here, immobility wrt the planet should be regarded as a special case of immobility with respect to a larger thing.

A door is typically a mechanical, removable component of a building. I'd call it an object.

I think we agree that the doorway, regardless of its material, is a surface pattern of the building structure built for a certain purpose, or found by chance in the environment (a cave home..). I'd not define it by stop digging, but by functionality of form. In the current definition of Physical Feature, this is comprised, as all holes.

I'd argue that the salient feature of Physical Feature for us is that removing implies destruction of material substance around it (cutting etc.), and that it travels together with a larger mobile/movable/moving body (be it the planet) in a certain position with respect to it. These would be relevant conclusions for the historical discourse we could rely on. For instance, the Abu Simbel temple, a cave, was cut out of the surround rock by going sufficiently deeperinto the bedrock.

Opinions?

Best,

Martin

On 24/3/2015 6:49 μμ, Simon Spero wrote:

I believe the salient, er, feature, of a man made feature is that it is formed by modification of some physically existing thing, and cannot exist entirely separately from that substrate.

Immobility is not the defining characteristic (e.g. the examples of Michael Jackson's nose in physical feature / man made feature).

[I am not entirely sure how robust the definitions are; the examples of door and doorway have some concealed metaphysical assumptions. A door may not be a feature of a building, but it is a feature of the wood or stone it was made from. A doorway is a hole, and the first rule of ontologies of holes is "stop digging". The holonyms of door handles are tricky enough.]

Casati, Roberto and Varzi, Achille, "Holes", /The Stanford Encyclopedia of Philosophy /(Spring 2014 Edition), Edward N. Zalta (ed.), URL = <http://plato.stanford.edu/archives/spr2014/entries/holes/>.

Simon

On Mar 24, 2015 9:19 AM, "Athina Kritsotaki" <[email protected] <mailto:[email protected]>> wrote:

    New CIDOC CRM issue

    Dear all,
    Immobile buildings (graves, rock cut churches, chambers and generally
    immobile monuments) are defined as features since they cannot be
    separated
    from earth and the surrounding matter. The question is should we
    regard
    all the immobile buildings as E25 Man-made Feature? If the answer is
    positive,  at that case it is contrary to the examples of the
    Coliseum and
    the palace of Knossos, which in CRM are referred as instances of E22
    Man-Made Object and E19 Physical Object respectively.
    So, think about this

    Regards,

    Athina Kritsotaki


    ----------------------------
    Athina Kritsotaki
    Information System Laboratory
    Institute of Computer Science
    Foundation of Research & Technology
    e-mail:[email protected] <mailto:e-mail%[email protected]>
    Tel: 2810 391639



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