"Paul Hirsch: We called the scene 'Interior - Ben's Cave,' even though it didn't really look like a cave. In the original cut of the film Ben and Luke heard the whole message first, and then they talked about Luke's father and the sword. I looked at the scene, and I said, 'George, there's something wrong here; Leia's message basically says that the whole universe is about to blow out, and we have this long dialogue between Ben and Luke about something else right after it.' So I suggested that they have the talk first and then listen to the message, and we restructured the scene that way."
--ID