Erik Mueller was a member of the IBM team that developed the Watson Jeopardy! system, Watson for Healthcare, and WatsonPaths. His books include Commonsense Reasoning, Daydreaming in Humans and Machines, and Natural Language Processing with ThoughtTreasure. He received an S.B. in Computer Science and Engineering from the Massachusetts Institute of Technology and an M.S. and Ph.D. in Computer Science from the University of California, Los Angeles.