with entities which the philosophers havnt ever even thought about 
(like nonlinear coefficients of friction and lipid bilayer membranes) 
and which rip the conceptual fabric to pieces when one tries to put 
them into it.

&gt;Furthermore, it isn't true
&gt;that the lower level ontologies have been extensively modified to fit them
&gt;onto Sowa's upper level.  My strategy has been to locate a node in Sowa's
&gt;ontology which could reasonably be regarded as a most specific subsumer of
&gt;the highest level 