Re: Objects and Relations

"David BL" <davidbl_at_iinet.net.au> wrote:

[snip]

>All the above comes down to definition. Your usage of "model" is
>different to mine. I restrict it to the narrow sense of the
>representation of knowledge (in the form of attributes and
>relationships) about external entities. I define "simulation" to be

     By that, a clay model of an automobile would not be a model. I think you have an overly-restrictive definition.

>about creating a working machine that happens to *mimic* reality with
>no intention of storing knowledge about external entities. Are you
>saying such a distinction doesn't exist? If so then we disagree. If
>it is merely over what the words "model" and "simulation" mean there
>is nothing interesting to discuss.

     A simulation is a model.

     A model is a restricted representation of something. The simplifications depend on what the model is to be used for. If a model for aerodynamic testing, the shape of a car would be modelled. The sound system probably would not be in the model (though the aerial might be).

[snip]

Sincerely,

Gene Wirchenko

Computerese Irregular Verb Conjugation:

     I have preferences.
     You have biases.
     He/She has prejudices.