Like many, I found the sequence in which the new Ripley “hacks” a sexist computer to give herself an abortion to be the best and truest to form. The magic of the original Alien movie was largely the alien in all its unsubtle sexuality. That is, the species will or drive for self-preservation programmed into all life.
Yes, the movie Prometheus is about creation, but, like its predecessors, its strongest when the creation being interrogated is literal, carnal. The Engineers are, at best, the decorations on a vase for serving up the black goo at the heart of the story: the liquid Id.