A great answer can compensate for a bad question.

A great question can compensate for a simple answer.

Kids can ask questions, but they rely on an experienced teacher to effectively answer.

Teaching someone effectively through answering questions, require the teacher through the students questions to build a model of the students model. To answer not only the question directly, but also the question that should have been asked instead.

A good end-of-chapter quiz doesn't check that a reader read the next. It asks questions whos answer rule out possible (or common) incorrect mental models the reader may have built.

A learner skilled in asking truly excellent questions, makes questions for which even a bad or simple answer rule out and refine their assumptions.

And that is a skill i doubt is ever truly mastered.

Its like the X Y. A great teacher answers X instead of Y. A great learner asks about X in the firstplace.