June 2014 : Do Stories go on forever?

A what point does a narrative actually begin? Does it begin where the story starts, or did it start when the trigger that led to the chain of events went off. Did the story exist even before the point you call the trigger?

Where does it end? When the story actually gets over, or when you decide it is over. Can the story ever get over? Doesn't it stretch on, endlessly- affecting other stories that are happening. 

Is there ever a beginning, or an end? Or do stories just go on forever?

____
2014: The Year That Was