Quote from: SM on Sep 09, 2007, 09:23:33 PM
Yep. All they had was a transmission that warned people to stay away from an organism on LV-426 (almost certainly hostile, otherwise why warn people to stay away?).
There's no link between Weyland knowing about the Aliens from AvP (which they didn't by the end anyway) and them knowing about them in Alien.
whoever said that the signal actually contained such specific details. For all we know it just said to stay away from the planet, if it had specific coordinates where to stay away from, i think the nostromo would have landed a little closer to the derelict so that kane, lambert and dallas wouldn't have to walk as far and ash would have had his specimen sooner.
So expecting to find a hostile organism, provided that special order 2037 was given prior to them investigating the planet, does indeed imply weyland yutani was highly eager to find a hostile species for the bio-weapons division. This also implies that they didn't have any such species anywhere near as potentially effective and deadly as the alien species from the franchise.
So something had to initially prompt them to want to use alien organisms as weapons. You don't just wake up out of the blue and decide to include alien lifeforms in your bio-weapons division, which most likely would have originally pertained to microscopic things/germ warfare.
There is nothing in the events of alien that contradicts some event which could take place after avp-r and before the events of the first film, that could have made the aliens known. There is no direct evidence, but it remains possible.