He received a Ph.D. in artificial intelligence and computer science at Carnegie Mellon University under Herbert Simon and Allen Newell.
From the mid-1970s until 1990, he was a researcher at the Information Sciences Institute of the University of Southern California.
From 1990 to 1996, he was a consultant with the Summer Institute of Linguistics, based in Nairobi.
William C. Mann died on August 13, 2004, after a long struggle with leukemia.
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