0.5 Acknowledgements

This book is a practically oriented distillation of ideas that have grown out of many years of productive collaboration, formal and informal, with individuals in both the academic and the industrial human-computer interaction (HCI) community. We have attributed ideas to individuals wherever possible, but we acknowledge a debt to many unnamed persons whose efforts have combined to provide a deeper understanding of the problems and solutions in the field.

We especially acknowledge the contribution of two of our colleagues at the University of Colorado, Peter Polson and Gerhard Fischer. Their research, as well as their insightful counter-arguments to points we might otherwise have accepted as obvious, make CU an exciting and productive environment in which to do HCI research.

Clayton also wants to acknowledge his debt to John Gould, recently retired from IBM Research. John has given Clayton help, guidance, and friendship, as well as his keen insights into all kinds of issues, technical and nontechnical, since 1970.

Many people, including our students, contributed suggestions that have helped to make this revised edition of the book a better publication. In particular, we acknowledge the detailed comments of Dieter Boecker of the GMD and John Patterson of SunSoft.

Much of the research described here has been supported by the National Science Foundation (grants IRI 8722792 and 9116640), by US West, and by CU's Center for Advanced Decision Support in Water and Environmental Systems (CADSWES).