xhonzi said:
As long as he knows that Anakin had turned bad and that he's trying to protect his memory, why would Obi-Wan have to know Vader's actual identity?
Perhaps I'm confused.
In ROTJ Obi knows Anakin=Vader.
If Obi knows Anakin turned bad, he's still lying to Luke in ANH. Why replace the currently understood lie lie (Anakin=Vader) with another plot twist that ammounts to the same thing (Anakin=killed by someone who was Vader=but was still bad anyway)