I don't use it too often because of the time it takes, but for critical work it is really good.
I have tried to come up with other equivalent ideas, like asking questions about a specific aspect of a feature, or showing the diff with some gaps to be filled, and even though they help I am still on the look out of methods to "imprint" the understanding of features into our brain.
Does anyone know any good papers or studies that could be useful in this research?