One does not learn effectively by passively listening to a lecturer. Although a student might pick up the lecturer's point of view, the content is soon forgotten. Most research shows that when the learner is actively involved in acquiring knowledge, the acquisition goes much more rapidly and is more effectively retained. The problem with technology is that most often it comes as an afterthought and is not totally integrated into the course materials. The days of one person designing a course that effectively conveys the content of a particular topic are long gone.
Single authorship is a rarity, multiple authorship the norm.
Commonly a group might include a biostatistician, a modeler, a field person, a lab person, etc. That same should be true with a course. An ideal team might be a content person, a psychologist of learning person, a graphic artist, and perhaps even a historian of the particular subject matter. A good example of this is the modern textbook. Although many of the new books have lost the flavor of the individual author, they are pedagogically stronger because they have been designed by teams of workers, including specialist on the topic, learning specialists, and graphic design specialists.