Like I've said before, it's not a "blank slate" our guardians have knowledge of everything we have accomplished in game. We know of the collapse, the fallen, give, vex and cabal, the tower, the way the fallen run hierarchy works, who the hive leaders we know of trying to invade earth. Not much about fallen or cabal yet but we haven't played much of their story yet. If we knew what would happen next, there wouldn't be any story. I dont get why people can't comprehend how this game is set up. Or they just can't accept it, which is a loss because they probably think reading a book like mass effect is better than actually unflawed gameplay.