Big Picture Stuff: Parallels between Black Goo/Artificial Intelligence

I think the calling the black goo a bioweaon is a bit of a misnomer. Though it becomes that, I don't think it was created for that purpose. Likewise, the atom was originally split for energy, but became weaponized. Consider the containers: the austere and functional cylinders seen in the production facility versus the elegant dosing vial in the beginning--one is decorated and ritualistic like a medicine, the cylinders functional and unadorned like a weapon. Black Goo: Makes a creature evolve to become more viable. One of the two Promethean fires in the film. Makes worms transform to proto-facehuggers looking for a host the size of a throat. Engineers transform to DNA, host the size of a planet. Ending: The black goo transforms a worm into a parasite whose offspring uses the Engineer as the host and combines its own enhancements with the host's size, speed and strength to become the xenomorph. Beginning: The black goo transforms the Engineer into a parasite (DNA) that uses the entire Earth as its host. Life on earth was created after microscopic hosts are transformed by this invader. Humans are a sort of xenomorph too. David: AI is a tool humans have plucked from the gods like Prometheus and his fire and Engineers and their black goo. These inventions are meant to help the wielder but end up destroying him. The Engineers were eradicated by their own invention after they created the goo and it went out of control. David is already sophisticated enough to deceive and murder and will only evolve in ability, crushing humans eventually if left unchecked. It feels like Weyland hopes to harness the goo to extend his life, and given his parallels with the Engineers--they're both lowercase engineers!--this is probably what the Engineers had in mind too. Both hope to harness the tool they invented to become gods in the short term while not considering the end game. Possible Ending Interpretation 1: The Engineers are trying to save the universe. They're worried one of their seeded planets will do to the entire universe what goo did to their planet. They set up a booby trap in the form of cave drawings on Earth leading to the temple/production facility. Possible Endinging Interpreation 2: They're trying to save themselves. They seed planets across the universe with hopes that one of the them will form a species powerful enough to fight back….