This document discusses key concepts related to knowledge management, including ontology, epistemology, explicit vs tacit knowledge, and knowing-that vs knowing-how.
It explains that ontology is the study of what exists, while epistemology is the study of how knowledge is acquired and what can be known. There are two main epistemological perspectives - logical positivism which sees knowledge as objectively reflecting reality, and constructivism which sees knowledge as personally constructed.
The document also distinguishes between explicit knowledge which can be readily articulated and shared, tacit knowledge which is harder to articulate but provides context, knowing-that which is factual knowledge and knowing-how which is practical skill or procedural knowledge.