It's about the conclusion.
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when Vader uses the Bota it doesn't work cause its 20 years old and gone bad. But sine the story is.no longer spanning as long it doesn't work. Leaving the end a bit off
-Bring on your thousands, one at a time or all in a rush. I don't give a damn. None shall pass.
-To become a Jedi, it is not the Force one must learn to control but oneself.
-Podcasts: Star Wars Beyond the Films, The Star Wars Report, & EUCast