On Jun 20, 2007, at 12:06 PM, Mark Montgomery wrote:

Alan,

Hi Mark,

Rather than using the public community for just debate, perhaps it would be best used as an educational tool.

Ouch :) (though I do think that debate is a useful tool in education, and a survey of my posts would demonstrate that I've used the list for a number of purposes)

For example, what is your definition of a construct within the context of knowledge systems design in life sciences?

First, let me note that I did not originate the use of the term in this discussion

Constructs occur at many levels. In this conversation the issue that is being raised is the utility of distinction between continuant and occurrent, or roughly, thing versus process (stuff that happens to things), as the distinction is made in BFO and many other ontologies.

The counterproposals are not entirely clear to me, but in the case of Patrick I believed that the alternative is to abandon this distinction and consider everything a process, which may work equally well - I don't have enough experience to know.

Just for the record, and not wanting to re-open an old debate or take up too much time here, the proposal is not exactly to abandon this distinction, and certainly not to disallow it when it is useful, but to weaken its role in the formal ontology, so that it becomes legal to use 'process' talk when referring to things (and vice versa). One can view this as rooted in a philosophical (Whiteheadian) claim that every thing is ultimately a process, but one can also view it purely pragmatically as a way to simplify ontologies by removing the distinction between a thing and its 'lifespan'. The main practical effects are that the thing/process distinction is made into a matter largely of convenience rather than a strict taxonomic division into fundamentally different ontological categories, so that it is no longer necessary to decide a priori whether something "is" a continuant or not; some formalizations are simplified; and a uniform treatment of time and change is made possible. The downside is that a certain degree of sloppiness is thereby permitted, which can lead to a failure to reconcile divergent points of view; and that some people, apparently (I am not one of them) find it confusing or unintuitive to apply process terminology to things.

I promise not to raise this issue again on this list unless invited to do so. The debate is raging on other lists in any case.

Pat Hayes


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