About the author

Nils J. Nilsson's long and rich research career has contributed much to Al. His previous books,

considered classics in the field, include Learning Machines, Problem-Solving Methods in Artificial

Intelligence, Logical Foundations of Artificial Intelligence, and Principles of Artificial Intelligence.

Dr. Nilsson is Kumagai Professor of Engineering, Emeritus, at Stanford University. He has served

on the editorial boards of Artificial Intelligence and Machine Learning and as an area editor for the

Joumal of the Association for Computing Machinery. Former chairman of the Department of

Computer Science at Stanford and Former Director of the SRl Artificial Intelligence Center, he is

also a past president and fellow of the American Association for Artificial Intelligence.