I'm definitely purchasing the book on building ontologies. In my casual exploration of metaphysics, I happened upon these lectures and I see great practical value in this new field.
Back in 2005 my mentor, an Italian named Bill Cannistra introduced to the art of conceptualizing enterprise - people, data, process & goals, who advised me to read Kant's Treatise of Pure Reason. Post that, commercial definition of specializations start to melt away, as definitions themselves become concepts of owner's motivations, hence temporal or fluid.