Speculation on how the aliens came to be there
What do we think: was there some kind of malfunction? A plague? Maybe this was explained in the movie (I haven't seen it in five years), but I thought it was left kind of murky. Originally it appeared that none of the aliens were terribly bright, but then we learned there was at least one scientist among them. What do you suppose their mission was, some kind of deal transporting a bunch of worker drones?
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