a) John Fasano, one of the well known script writers for Alien 3 who worked on the script for Vincent Ward, was involved in adapting the book "Chariot of the Gods" by Erik Von Daniken, into a movie and he noticed that a lot of concepts in Prometheus were taken from it. He found the film frustrating because he thought it was similar to what happened with the prequel of The Thing , some of it was prequel and some of it was remake, so he thought it was like a "premake". So he decided that the script was Prometheus was nowhere near as smart as the script for Alien or even Aliens.
b) Fasano didn't like the fact that the geologist who was using probes to map put the silo (which Fasano loosely labeled as a ship) should be one of the ones to get lost, perhaps or perhaps he didn't recognise that the geologist was high on weed and was disorientated, and that if one is going to have him get lost with someone that (Fasano loosely labeled as a botanist but ) was a biologist, he (presumably the biologist?) shouldn't want to pet an alien creature, being in this case, the hammerpede.
c) Fasano thought that the first Alien film was flawless in its logic, but in Prometheus, the chararacters only did things because the writers wanted them to do them, and the actions made no sense at all, as if the narrators were working narratively backwards as if they were saying"We need an alien on the ship. Let's get it on there" but perhaps there was a lot of that going on in the original Alien movie but less obviously so. Although he liked the way it was shot, he didn't find a single surprise in the movie
- How did you feel
about PROMETHEUS (2012)?
John Fasano: I've just been writing a movie about The Chariots of the Gods by Erik Von Daniken, and a lot of the concepts in PROMETHEUS are taken from it. I found the film frustrating because it was similar to what happened with the prequel to THE THING (2011) – some of it was prequel, and some of it was a remake. It was like a 'premake'. The script for PROMETHEUS is nowhere near as smart as the script for ALIEN or even ALIENS. If you're going to have someone get lost on a ship, it shouldn't be the guy whose job it is to navigate the ship. If you're going to have him get lost with a guy who's a botanist, that guy shouldn't want to pet an alien. Everything in the first film is flawless in its logic. But in PROMETHEUS, characters only do things because the writers want them to do them. Their actions make no sense at all. It seemed like the writers were working narratively backwards. ''We need an alien on the ship. Let's get it on there.'' I loved the way they shot it but there wasn't a single surprise in the movie. (http://www.money-into-light.com/2015/03/john-fasano-on-writing-alien-3.html)