Ambiguity is not the same as confusion. And vagueness is a counterfeit form of subtext. To write in a confusing manner merely frustrates the audience's desire to make an interpretation about what they are seeing or hearing, whereas ambiguity permits of several possible interpretations, none of which might be compatible with one another but all of which are credible in terms of the emotional logic of the story. The incompatibilities that reside in ambiguity are the source of subtext.
- Billy Marshall Stoneking