Question: Can Jedi and Sith actually read thoughts? In this movie, Vader was able to realize that Luke was thinking about Leia during their fight on the Death Star. If he could read Luke's thoughts, even though Luke is also a powerful Force-user (not a weak-minded person), how come Jedi in the past couldn't detect the thoughts of other strong Force-users? For example, why didn't Mace, Yoda, or other powerful Jedi find out that Anakin was keeping a secret about his marriage to Padme, the way that Luke was keeping a secret about having a twin sister?
Question: Why did Vader stop Luke when he tried to strike at the Emperor with his lightsaber? I know he said earlier that he has to obey his master, but he keeps encouraging Luke to give in to the dark side. If he hadn't stopped Luke, Luke could have given in to his anger and killed the Emperor, and also rid Vader of the Emperor at the same time.
Question: In an answer for one of the other questions here, it says that Leia doesn't know she is adopted until Luke tells her that they are siblings. If she doesn't know, why would he use the term "real mother" when asking her about her mother? It seems that if she didn't know she was adopted, she would think it was strange for him to ask about a "real" mother.
Question: If I am correct, this movie takes place about one year after Luke left Yoda's training in "Empire Strikes Back." Why does Yoda think that he requires no further training? In the prequels and the "Clone Wars" TV show, Jedi apprentices went through several years of difficult situations and trials before finally being named as Knights or Masters.
Question: How did Luke learn to construct a new light saber (after losing his old one in the fight with Darth Vader)? Yoda seems like the only person who could have taught him, but Luke hasn't been back to see him since he lost his old one (Luke's line to Artoo about "keeping a promise to an old friend" makes it clear that this is the case). Was it part of their earlier training on Dagobah?
Question: After Anakin becomes Darth Vader, he seems ruthless, actually evil. "From my point of view, the Jedi are evil!" Is just one quote. That being the case, this movie makes it seem like Anakin knows that he's evil and wishes he wasn't. Basically, my question is, why didn't Anakin turn on Palpatine sooner? Or simply leave the Sith?
Question: I am confused by Darth Vader's attitude in this movie. In Episode V, he asked Luke to join him and get rid of the Emperor. He seemed quite confident and happy about this idea. Now, in Episode VI, he tells Luke that he "must" obey his master, that the Emperor is Luke's master now, etc. Why does he now want himself and Luke to be the Emperor's servants?
Question: I'm sort of curious about why the Vader, the Emperor, and other Sith (in the other movies/books) refer to the dark side as the "dark" side. It sounds like a negative term. In Episodes II and III, both Dooku and Anakin seem to think that the dark side is the truth and the right thing to follow, so why would they call it "dark"? Even though the Emperor creates a lot of schemes and wants power, he probably doesn't think of himself as evil, so him calling his powers "dark" (in Episode VI) seems a little odd.