The Student Portfolio is the New Book: New Practices, Profession, and Scholarship -- Campus Technology #yam
It is no stretch to say, "The knowledge of an academic course no longer pre-exists the course." This is literally true, since over 15 weeks--or 10--the knowledge domain in which the course is offered will in fact have moved its conceptual conversation significantly enough to challenge the instructor's "truths" from the beginning of the course. Knowledge in any field is a moving target now.
This is certainly the case for my IT subjects which is why I never settle on lecture content concretely until a few days beforehand.