re: Prometheus (2012) discussion - *SPOILERS!*
The Geologist got turned and came back to the humans in their ship and Idris Alba/the captain burned him. Come on watch the scenes again. The ginger geologist got turned and came back as a human monster while the biologist died directly we saw his body twice. The snake in his throat just ate him and attacked Ford. I saw the film less than two days ago. Rewatch the scenes. The nerdy biologist died clearly and never came back. You cant miss one of the few monster eating human scenes in the film.....
About 3: Weyland company have always been little side story as generic evil company. They have never been really important. It depends on what you find most interesting. I find the engineer aliens and the messed survivle instinct of the monster they created. Like Greek gods in mythology creating humans that can kill them.
Overall the strenght was we didnt know the answer for sure, some were answered and others were left to our imaginations. Thats a good thing. Otherwise it is too simple film.
There were some big holes in the science and in the plot that you cant over think. I like it was different film than just copying the horror feel of Alien films.