hey guy i just wanted to point out something that might give some evidence that lucas has the story planned out down the level where he knew that anakin created C3PO. in empire strikes back when chewie knocks over the 2 guards, the soldier is just aobut to shot him in the back, whos on his back, C3PO, and vader see this and puts his hand out to stop the man from killing chewie/ blowing up C3PO. i never saw it b4 but when i friend mentioned it made sense.