Some believed that the plot would involve someone stealing something or pissing of the gods and getting punished, like the Prometheus myth. However, I see no similarity other than the name.
I guess David stole an urn but that was not the reason the Engineer got pissed off and ripped off his head. In fact the Engineers planned 2000 years ago to destroy us and as far as Im concerned they decided this randomly, unless I missed something. Anyone who has a theory will just be guessing right?!
LINDELCOCK!!!!!!!! I'm hate you!!!! (waves fist)