So many things I wanted to post about, so many work related distractions and so many excuses. Here's one for brevity.
My structural definition of a narrative:
A collection of events* that makes sense of itself without the use of axioms.
*Was hesitant about using the term "event", but I think that it's more precise than saying "signs"--there's a self similarity here I think; the idea of an event is itself inscribed in narrative.