"Darth Vader is a servant of the dark side of the Plot." When Ben Kenobi gets written out, he becomes one with the Plot and can speak inside the hero's head. When a whole planet of good guys gets blown up, Ben senses "a great disturbance in the Plot."
Because some things don't have to be fully explained... - Edit 1
Before modification by aragornital at 01/08/2012 11:21:05 AM
First movie had an excellent innovative concept, never shown before. It really didn't need narrative story... So that what you get when creators get greedy.