I think you're confused with what I'm saying. I don't think Xhonzi is, and I surely am not thinking of ESB in context of its later sequels or prequels or novels or anything else. I'm purely thinking of it in context of itself. And at the time of its release, for that entire film, Vader is written to be Luke's father. Just because the audience is not made aware of it until the end of the film doesn't mean it's not there. In fact, it would be impossible for it not to be there, unless you know of some way to update a movie in the middle of itself, something I admit I'm at a loss to figure out.

Let me clarify. The way you're talking, this is what's coming across to me. Let's say we're talking about Star Wars. There's a scene a third of the way through the film where Ben reveals to Luke that a young Jedi named Darth Vader killed Luke's father. Based on what you've said so far, it seems like I should assume you think that, before Ben says that, the information is not only unknown to Luke and to us, but it's also completely non-existant. That it's some kind of cosmic ripple effect, and that, in all of Darth Vader's scenes prior to that, there is absolutely no connection between him and Luke's father, but after Ben says that, every subsequent Vader scene has that connection. And... that's just... odd.