About Diana (spoilers)
How come she knew about human emotions? The visitors couldn't have been on the Earth of the TV show in the past. Otherwise, they would be evidence of their visit. So, maybe the Diana lead visitors encountered humans in another planet?
Since the visitors future as a species depends on what happens on this Earth, that means things did go well on the other planet with humans, right? That's why Anna took over? Or show's writers did think about this stuff?
How weird was Anna leaves Diana locked up for 15 years and then suddenly she visits her frequently even just to brag (or gloat as Diana said)?
By the way this relates to the retarded notion of "human emotions" and that having human skin over an alien one can give you emotions. What a pile of BS. And it isn't "human emotions", it's emotions. Visitors have them.