I've written hundreds of essays and gotten few comments, so of course it's the really harsh one that brings in the comments.
Which, of course, means I must continue being a dick!
I'm kind of sick of it, so here is my summary of all the things I've tried to say. Feel free to argue or disagree:
Story is not gameplay. If you make a game about creating a story, you have to put an actual game in it with goals and limits, or else you're just making a story creation utility. Of course "goals" and "limits" don't have to be explicit, but they do have to exist. For example, including specific characters is "limits" and "goals" in and of itself.
Story is not computer generated. Computers cannot "wing it". Computers can, however, use the pieces and paths you provide them to give the player an experience customized to his play preferences. The computer can adapt the story you've programmed it with in order to be more appealing.
Story is not story. If you want to overdefine everything, great! Just remember that other people aren't using your definitions. Me, I lump it all together. So, when I say story, I might as well say "drama/narrative/experience".
Thank you, come again.