Tom Landauer is Executive VP for Research of Pearson Knowledge Technologies (formerly Knowledge Analysis Technologies), of which he was founding President in 1998. Tom and the group of computer scientists, linguists and cognitive psychologists he directed at Bell Labs and Bellcore (now Telcordia) did the fundamental and applied work that led to the theory, development and implementation of Latent Semantic Analysis (LSA) and more generally conducted research on computer and communication-based tools for enhancing human learning and performance. His company is now applying LSA to automatic analysis of essays, cross-language information retrieval, and collaborative learning. Tom is also a Professor of Psychology at the University of Colorado, Boulder, and a Fellow in their Institute of Cognitive Science. He has served on the faculties of Harvard, Dartmouth, Stanford, and Princeton. He was a Distinguished Member of Technical Staff at Bell Laboratories and its successors for 25 years. Tom has contributed to our understanding of broad issues and implications of HCI with many papers, his edited The Handbook of Human-Computer Interaction, and most notably in his influential book, The Trouble with Computers, which explores the productivity paradox of computing and the way that HCI can make a difference. The book received the Association of American Publishers award for best Computer Science book of 1994.