While the C2K researchers will work as hard as they can to use it effectively, they may be the Edisons, and the D.W. Griffiths of that medium are down the road a spell. It is important to distinguish and categorize educational media, to better serve developers making choices, but these categories are best served as taxonomies of what is. New artists will always redefine what a medium can be. It is highly important to explore how to create appeal than engages students and draws them into thinking about educational activities. It's all about getting students engaged.
Cognitive apprenticeship plays a similar role.
Much of teacher education can actually be view as a means of creating appeal. In classroom culture, one of many students' goals is to please the teacher. If the teacher can understand the activity and see how it can lead to important learning, the teacher can be pleased by successful use of the activity in order to learn. We may never understand fully how to create knowledge changes in peoples' minds. Art theorists for ages have tried to explain art, but never with great confidence or great success.