Answers are grounded in this paper and cite their sources.
Nils Nilsson's new book on AI is now available from Tioga Publishing Company, P.O. Box 98, Palo Alto, CA 94302; (415) 854--2445. 476 + xv pages including approx. 400 references, remarks about the references, and exercises. 1980, ISBN 0-935382-01-1; $24.50 plus shipping and handling.
No takes yet. Share an insight, caveat, or question.
Keith Price (1980) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: