Prometheus was a very good movie because it was about the search for objective truth and how every character got sidetracked by their own personal biases which prevented every last one of them from having a chance of understanding what the fucking plot was
it also had the most horrible and sorry excused for proto-indo-european handwaved with "well 90 % of what we think we know about PIE today is probably wrong so this is what it really sounded like!!! : P p pp p PP Pp" plus it makes no sense diachronically that the engineer guy would be speaking that anyway is so stupid and ruins the credibility of the entire movie (as if the rest of the stuff didnt anyway but ya)
They should have accurately re-created a primordial proto-language that would also be used by alien progenitors, for the science fiction movie, I agree. What a waste of a movie ticket fee