Narrative Drive: "What matters is that the ship is always trying to get somewhere"

You know how books about writing novels and stories always talk about "conflict"? And you eye your delicate love story or strange evocation of an agoraphobic fantasist, and wonder how you're supposed to get the Kalashnikovs or the divorce-court drama in there? I know why it gets said - I know why this issue matters, and matters hugely - but I've never found "conflict" as a term particularly helpful: so often the human dynamics which drive good stories just don't seem to file under that heading. "Obstacles" is perhaps a more useful term, when we're talking about plot and story,...