
&gt;integrated set of ontologies?  I suppose a system of ontologies can
&gt;(should?) be regarded as a single ontology from one point of view.  But it

&gt;seems that one of our, as yet unresolved, issues is what we really mean by

&gt;an "upper" ontology.  The scope of your criteria seems to imply one
&gt;all-embracing ontology (or set, or system of ontologies).  Are there
&gt;criteria that we can further apply that will help us make progress on the
&gt;project of defining an "upper" ontology?

Those crit