This first volume is but an introduction to the growing use of computer-based systems in health-science education. It is unlikely that the intellectual or applied system constructs herein are either exhaustive of the field or immutable; growth is inevitable. For one thing, the field is still fractured and loosely organized, which is an inevitable description of an adolescent science in a rich mine of ideas. There is emerging, however, an organizing concept. A short look into the future indicates that educational system design will be dominated by a concept which, for want of a better term, we...