John Long is Emeritus Professor of Cognitive Engineering at University College London, where he was previously Professor of Cognitive Ergonomics and Director of the Ergonomics and HCI Unit. He has served as manager at Shell Oil International in Africa and Vietnam and as senior scientist at the Medical Research Council Applied Psychology Unit (MRC/APU), Cambridge. His research includes three coauthored books, more than 200 publications, and numerous presentations, grants and consultancies. He has received the Ergonomics Society (ES) Sir Frederick Bartlett medal, the International Ergonomics Association (IEA) Outstanding Educator's Award, and recently received the Athena Swan Award, being identified as a hero of Computer Science by the University of York. An avid cyclist, he has completed the Tour de France, Giro d'Italia and other major cycling tour routes elsewhere in Europe, Australia and Asia. He is also an expressive abstractionist painter. His 'Framed Approaches' from 1989 serves as the cover for this book. He is an unreconstructed existentialist.