The technology of instructional development is advancing slowly but steadily; it is, however, underutilized in the educational system. The creation of a "market" for research and development in education is a necessary condition for the achievement of real progress, along with progress in such other fields as videodisc and quality control.…

This theoretical model for message design directs the designer to design a block of time that optimizes the information load and message complexity within the constraints of the receiver's abilities and experience, the requirements of the source, and the capabilities and limitations of the medium. (Author/JEG)