Contends that comparison studies offer one important view from which to frame questions about the study of distance education. Responds to Farhad Saba's ("Toward a Systems Theory of Distance Education") major premises about distance-education research. (AEF)

Discusses limitations of "Comparing Distance Learning and Classroom Learning: Conceptual Considerations," Smith and Dillon's physical science view of educational technology. Suggests that a systems approach is necessary to describe distance education and define a set of principles and rules for its effective use, as well as a set of criteria to…