I would like to compliment Peter Arashiro on his excellent insight into, and articulation of, a problem that I consider central in education. Elaine had asked why is there a need to isolate teaching and learning and thereby pit instructional strategy against learning style. Peter recast this as a question of responsibilities. Education is a two-body problem.
Somebody has to lead, and do it competently, and somebody has to follow, and do that competently.
As Peter noted, one cannot simply dump the responsibility for metacognition onto naive learners. I would only disagree on one small point. Peter has hit on the two- body problem quite perceptively. When a teacher enters a classroom both teaching and learning are supposed to go on, but they are the activities of different people. But this does not in any way mean that they must be considered always as a single entity, just because they go on at the same time.