jaguargod,
Xenomorph,
12 years ago
It admit it would be a big coincidence, and I can agree with what you say, in as far as that is how the script was written. Now that I think about it, it was a little far-fetched on some of the things that the aliens were able to do, such as the queen knowing how to operate the elevator, and stopping on the same level as Ripley. But it was a movie, and sometimes you have to suspend reality. I would still question that if the aliens were able to shut down the power, why wouldn't they have done it before the Marines arrived? It would have benefited them during their assault on the colonists. If they had such a highly developed ability to reason, wouldn't they have sensed that something was wrong with the reactor, and tried to escape to an area of the planet where they could survive?
As far as the aliens avoiding the auto-turrets and coming in through the vents, I don't see that as any different than spraying insecticide on ants. It will kill the ants that you hit, and it will temporarily prevent them from re-entering the area that you sprayed, but unless you spray every inch, they will likely find another route to get where they wanted to go. That is really nothing more than the ants using their senses to track something down. It is an instinctive behavior that doesn't imply a higher intelligence.
As I said before, I don't agree that they are stupid, I just don't know if I quite believe that they are "intelligent". And I think that is really what makes the concept of them the most scary. Knowing that no matter what you do, they just keep coming, because that is all they are hard-wired to do.