4th viewing and new thoughts...

Just saw the film for a 4th time. Well, technically 3 1/2 because the girl I went with got sick and we had to leave. Regardless I had a few new thoughts pop into my head. First, the seed has been planted in my head this week that perhaps David or an earlier version of David had possibly already been to LV-233. This would help to explain a lot but as a lot of other questions with this film there are arguments for as well as against. Someone said that David or another version of David having been to the planet would explain how he was able to open all the doors, initiate the holograms, etc. I do like this theory but when the Prometheus first arrives at LV-233, David opens the shutters or whatever to see out the front of the ship. When he does this the look on his face did not give me the sense that he has been there. I got the feeling that while he has no emotion he had been waiting a long time to see the moon. Also, if an earlier version of David or whatever had visited the moon you would think that all the info from the previous trip would have been implanted into his memory or whatever so I don't think he would have had quite the same look on his face when he first set eyes on it. I know the look on his face is a little flimsy but his knowledge of how to open doors, start the Juggernaut, holograms, etc can be explained because he had, through Dr. Holloway's(He's a doctor too!) thesis and studying ancient languages, learned how to communicate with the Engineers. If he can communicate with them he can obviously read their writing. What I believe is that Weyland, like the company in Alien, had previous knowledge beyond what Shaw and Holloway have told him. This would explain why he would trust their theories enough to fund the mission even though they were relying simply on faith. This would explain why he threw together a mostly idiotc crew. They were going to be test subjects. Do you really think he gave a sh*t about the planets rocks? No! While I'm sure he wanted a decent biologist on board did he really need him in the end? No! They were simply fodder and test subjects. If that is the case it put an end to a lot of the bitching about some of the crews idiotic behavior. It would also explain the "try harder" conversation. Weyland and David have some knowledge. They know the black goo is the key but not exactly how to use it. They need all the idiots aboard the ship to find out. Instead of spending $$$ on the best, which his company might have use for in the future if he does gain immortality. If you ask me this explains all that away. And it's what I choose to believe. And onto "choose to believe." A lot of people say the film is sh*t if it's a stand alone film. I've never really agreed with that as I love all the ambiguity. I do want a sequel and think it would be great but I've never felt that the film absolutely has to have one. Watching the briefing scene at the moment when Fifield and Millburn question Shaw and she says "...but it's what I choose to believe" really sent an idea off in my head. If there is never a sequel I think this line resonates and mirrors the veiwers point of view. We may not know. There may not be facts to back up our theories but IT'S WHAT WE CHOOSE TO BELIEVE. Just like Shaw. I think that's a very cool aspect of the film and tbh I don't think it was an accident. Anyway...thoughts?