I've seen all the movies of the Aliens series, as well as the Predator series, included the extremely dissapointing Alien vs. Pretador. There is one thing that confuses me though: If humans had come into contact with Aliens in the present day (in Aliens vs. Predator), why the hell did they not know about them in the future?
maybe i missed somthing in the movies. was the human past erased in some great war or something?