Reddit reviews How Star Wars Conquered the Universe: The Past, Present, and Future of a Multibillion Dollar Franchise

> Obi Wan: The other he spoke of was your twin sister.... or perhaps a trained and experienced Jedi Knight.

Fun Fact: When the line 'No, there is another' was written for Empire Strikes Back, it actually did refer to Luke's twin sister...who was heavily training with another Jedi Master in hiding to take up the fight if Luke failed.

The original plan for the Star Wars franchise was to make three movies, end the third with the climax of Vader/Luke's story, but leave sequel hooks for future movies in the form of his still-unseen twin sister. Then they would sell the rights for big money, let some other company continue the story, and Lucas would retire and make art films.

Then, a couple drafts into writing RotJ, Lucas' wife told him she wanted a divorce. Since she can legitimately claim equal ownership of the property (she's the only Lucas to win an Oscar for Star Wars) he decided to trash the sequel ideas and tie up everything. Suddenly Leia becomes the sister even though it makes no sense, and Yoda is talking about how Luke is the last Jedi so there's no untold stories out there, and then they have the big happy ending that implies the Empire just kinda disappeared and everything was cool again.

Source

So, yeah, just kinda ignoring that Yoda said that Luke was the last of the Jedi is hardly a travesty to the story, given that it was just a bitter attempt to end the franchise in the first place.

https://www.amazon.ca/dp/B012271QQU/ref=dp-kindle-redirect?_encoding=UTF8&btkr=1

I recommend it for simply being a good read, but the guy really did his research on the origins of the original trilogy.