Why is this dumb? There is a huge dead alien in alien, and prometheus doesn't even touch it. Ridley said that was the whole point of the movie.
No. He didn't. He merely asked what was that being
all about. Not specifically that corpse, but the nature of that civilization.
You know what the story of that being was? here.
he picked up some eggs from the intergalactic Milky Way Super Market, was on his way home, eating an alien omlette, when he had a case of heart burn. He set his ship down LV-426, gave birth to the first alien, it exploded into a puddle of acid from being so awesome, thus creating the hole in the floor. There it sat for 10,000 years until John Hurt decided to raid the fridge.