here is my theroy: you remember the preds fighting the thousands of aliens in the ancient city right? well that was a disaster it could have wiped out the entire human race if the aliens ran off, the humans are a prized prey of the predators so the predators built a pyrimid in a place where the aliens could not excape into the general human population, I think that the predators are great admirers of the planet earth, it being a perfect planet, with all climates and enviornments, it is a prized hunting world, and the predators hunt yet respect the humans, Also I had a life-changing experience a few hours ago, I saw the new movie Dodgeball (which is the best comedy ever made) and there were all these teens from my school in the theater, the same ones who relentlessly mocked me for likeing AVP, they knew I was there, and after the AVP trailer played some guy from my school screamed "You rock Adam!!!" and the theater applaused after the trailer and after the guy said that, almost everyone there was a person from my school and knew me, i just sat there with a grin on my face.