FalloutJack said:
The second reason...is that there is no spoiler here. The cast is doomed by canon and LV-223 itself is doomed to become 20 times more inhospitable due to the events of this movie. When you're talking a sci-fi horror prequel, you're watching to see what horror befell those who came before the Nostromo and how the situation got the way that it did.
Ok, but I still hold that it is bad writing in ANY kind of movie to have experts make moronic, unjustified decisions, especially repeated ones that result in a catastrophe. Conversely, I'm always impressed by both the writer's skill, the universe they created, as well as the danger that the character's face, when despite their sincerest efforts, a catastrophe circumvents their efforts. In the original Alien, it didn't seem so moronic to have a look see at the leathery egg-thing that showed movement. And even that was a single, isolated character, who has been previously characterized as a "space trucker", and not, say, someone trained in cross-cultural contact. And quarantine being broken on the Nostromo is justified as Ash was the one who allowed it, and the crew on the outside were shaken up, and also previously characterized as "space truckers" and could be expected not to give a damn about quarantine procedures. It fit together nicely, and was justified and detailed. And in the end, it made you really appreciate the story, because you couldn't just blame it on some dumbass.