ical issues that we have to work through, e.g. the representation of
&gt;time.  If these latter issues prevent us from developing a single,
&gt;monolithic ontology, then I think we should get as clear as possible about
&gt;the the different viewpoints in the debate and then formalize and package
&gt;these different viewpoints in independent modules.  It would be unfortunate
&gt;if we didn't end up with a single, overarching, and consistent conceptual
&gt;schema, but perhaps this goal is unattainable.  If it