"I believe that this book is a unique contribution to the field. The argument, based upon insightful analyses of a variety of sources, is enlightened. Robert R. Johnson has clearly revealed that the vast bulk of relevant research on technology and use/learning has been dominated by either system-centered or text-centered views. In addition, he places the evolution of these views in their theoretical/historical contexts. That alone is enlightening. But his analysis of the user-centered view is also a significant contribution because it provides a foundation, a rationale, if you will, for certain disparate but promising developments in ongoing efforts to adapt technological innovations for wide-ranging use." — Stephen Doheny-Farina, Clarkson University