{Roarke} Those who can't, teach. Isn't there some saying along those lines? {Eve} She gave him a blank look. If you can't do something, how the hell can you teach somebody else to do it?
In J.D. Robb's "Portrait in Death," a discussion takes place about the common saying that implies those who cannot succeed at a task often end up teaching it instead. Roarke references this idea with a quote, suggesting a certain cynicism about the validity of such a statement.
However, Eve counters his viewpoint with a pointed question, emphasizing the contradiction in the notion of teaching without the practical ability to perform the task. Her response indicates a belief in the importance of experience and competence in teaching others effectively.