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&gt; 
&gt; 
&gt; [PJ]
&gt; 
&gt; &gt; I would be very interested in developing this approach, with you and
&gt; others.
&gt; &gt; As I wrote, it can shift our focus from thinking in terms of a top-down
&gt; &gt; ontological hierachy, toward thinking in terms of how concepts can be
&gt; &gt; defined in terms of other concepts, and finding a kernel of primitive
&gt; &gt; concepts and definitional mechanisms that appear to be sufficient for
&gt; &gt; defining all concepts one might need in a