gt;this notion is to be philosophically construed.
&gt; 
&gt; I am talking about the concepts used by the axioms which 
&gt; comprise the ontology.
&gt; 
&gt; These distinctions are not mere philosophical decorations; they arise 
&gt; sharply as soon as you try to actually write axioms. The axioms of a 
&gt; 4-d ontology will look very, very different from those of an 
&gt; endurantist ontology. So as soon as someone wants to start on the 
&gt; business of creating an actual ontology, they will need to take