We can, quite simply, define narrative as the progression of events over time. The nuance therefore lies in our definition of such events. What attribute(s) of a particular happening denotes significance?
Action & Consequence
The model employed in Opera Automata
Objectivity & Subjectivity
In order for the actors to resemble humans, they must have their own subjective understanding of the narrative in which they exist. This understanding will encapsulate all information in the narrative. Which makes the data stored objectively almost irrelevant as no actor will be able to reference it. This notion parallels with humanity: there is no real objectivity, so all that matters is the consensus of our subjective realities.