Erik T. Mueller is a computer scientist and author of the books Commonsense Reasoning and Daydreaming in Humans and Machines. His work is in natural language processing, automated reasoning, and neural networks. He was a member of the IBM team that developed the Watson question answering system. 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.