keith williams:
I usually had some students shouting "my aircraft pitches nose up", while others shouted "but mine pitches nose down",and some even shouted "mine pitches up then down". This was very useful in that it demonstrated the range of possible effects.
As a ground instructor myself, I absolutely agree. Regardless of the syllabus, good students will often learn as much or more FROM EACH OTHER than from the instructor, who may find himself somewhat bystander. Sorting out competing examples and theories, accepting that the "book" may be oversimplified!