It provides a path for succesfully using the new digital techniques of morph, warp, overlay, composite, and underlay in ways that support communicating meaning rather than impeeding it. Don't create a digital effect for its own sake. Without context a morph becomes a cool move with no meaning. It's forgotten moments later because it has no meaning outside itself. On the other hand by following Marker's approach of integrating a technical effect into the context of all the other levels of meaning, technique enhances meaning.
Technique creates meaning.
Something has been made that will be remembered long after the viewing is over. Our new digital paint, video, animation, and sound tools provide us with new ways to create images. However if those new images are to mean anything, then they must work with other all the other elements that create meaning within a cinematic work. If there is no answer, work with it until there is. Or get rid of it.