# KEHOME/knowledge/theory/Sowa/problems.txt
# Jan/25/2003

# Here are some problem areas in
# Sowa's "Knowledge Representation"

1. does not distinguish between
	existent
	entity
	characteristic

2. does not identify domain of characteristics
e.g., Peirce's attributes
	existent has
		physical,
		abstract
	characteristic has
		independent,
		relative,
		mediating
	entity has
		continuant,
		occurrent

3. does not define
	concept
	existent
	entity
	characteristic
	...