ne:  there are many, many different coordinate
&gt; systems and representations that have been used, all of them
&gt; are valuable for different purposes, but the relationships
&gt; between them are very far from clear.  Taking one coordinate
&gt; system instead of another is a purely arbitrary choice, and
&gt; you have to know how they are related before you can make
&gt; a rational decision about how they should be positioned
&gt; in the ontology.

MW: Are you using an analogy here? If you are saying that