Metaphilm on Star Wars
"The fictional universes depicted in movies like the Star Wars or Star Trek series tend to get very complex . That complexity means that—inevitably—the occasional “continuity error” occurs. In normal movie parlance, a continuity error means one of those embarrassing moments when, say, the bandage on an actor moves from the right hand to the left hand between scenes due to a mistake by the makeup department. For science fiction fans, though, continuity refers to the overall logical and historical coherence of our beloved fictional universes."