Just to add something to this post, don't forget about the cave. The cave is such a great part of the movie because it is never explained to the viewer, it lets the viewer come to its own conclusion. Only Yoda says, "Remember your failure at the cave." If this were the PT movies, Yoda would have went into this long explanation on why Luke failed just so the viewer would get it, but back then, SW was not spoonfed to the viewer through the dialogue like it was in the PT.
Just to add something to this post, don't forget about the cave. The cave is such a great part of the movie because it is never explained to the viewer, it lets the viewer come to its own conclusion. Only Yoda says, "Remember your failure at the cave." If this were the PT movies, Yoda would have went into this long explanation on why Luke failed just so the viewer would get it, but back then, SW was not spoonfed to the viewer through the dialogue like it was in the PT.