Sometimes, when the line between fiction and fantasy becomes blurry, I look back and wonder:

What is Star Wars in the Star Wars universe?

Here we have this film, this story, about R2-D2 and C3P0 digging up General Kenobi and Luke Skywalker, the rescue of Princess Leia, the destruction of the Death Star. The credits roll, we step out of our home cinema, and maybe knock down a pint of blue milk something at the nearest cantina to the sound of ###z-wailers, live or canned.

What did we just watch? Was this film a piece of Rebel propaganda released after their latest victory over the Empire, subtly shaded to make Alderaan seem like an innocent victim of Imperial aggression?

Was this a documentary, recorded by invisible flying spy-droids, accurate in every detail?

Was this a historical re-enactment by history buffs vying for an independent film award, playing to a limited audience and academic accolades?

Was this the big-budget popular edition of the Journal of the Whills, some distant retrospective by the Star Wars equivalent of the History Channel - sensational and historical if not wholly accurate?

Is it a mythical tale from within the Star Wars universe re-hashed by a director looking to cash in on nostalgia?

Or in the Star Wars universe itself, should the Star Wars movie not even exist?