Because a Sith can't comprehend that a Jedi could exist after physical death?
Vader even says in ESB that Obi Wan can no longer help Luke. We've never seen a Sith ghost in the movies, so I'm guessing they can't do it.
Because a Sith can't comprehend that a Jedi could exist after physical death?
Vader even says in ESB that Obi Wan can no longer help Luke. We've never seen a Sith ghost in the movies, so I'm guessing they can't do it.