Top 5 Dumb Speculations

#4 is totally ridiculous. But yeah they're all pretty stupid.

2 and 3 are still quite possible. I admit 2 seems unlikely, but it is remotely possible that Shaw gets into an Engineer exosuit to pilot the ship she's on; possibly, she is attacked by other Engineer ships and crash lands on the planet shown in Alien. 3 seems like it is one hundred percent true, to me, if you don't mean "replicant as in from Blade Runner", but rather just an android like David. Vickers calls Weyland "father," and we have no information that he actually fathered any biological children.

#3 I find unlikely but in the film she has the same tendencies as David. Like after David is on the phone with Weyland he sees her in the hall just standing there blankly and we see David do the same when he has Shaw and her bf meet vickers. And she calls Weyland father, but not in a father-daughter type way, but more of a "you're my maker" kind of way.Maybe he designed her to be very human-like but just a tad bit robotic. The only things that would tell me otherwise is the fact that she is in hibernation in the beginning and that she has sex with the captain. After all, in bladerunner, the replicants feel human and have human wants.

I think 3 is plausible. Deckard/Rachel type and doesn't know she is a replicant. Goes into cryostasis, wears a spacesuit etc.

#3 definitely plausible. Only all the documentaries and deleted scenes nonsense of the dvd/blu-ray or a directors cut will explain the background to the characters me thinks.

Addressing #3; Moments with Vickers that made me say "Hmmm..." Vickers does push-ups fresh out of hypersleep while the rest of the crew is throwing up all over the place and going into shock. No-one else finds this odd? She throws David quite easily and hard against the wall. The only time David seems even a little intimidated. She also could have done sexual things with the Cap that was not intercourse. I will elaborate if needed. Her Medpod in her personal chambers is programmed for men only. Is she not worried about herself having to use the device for safety precautions? According to Weyland industries website: No mentions of Peter Weyland having a daughter, but does list Vickers as a "life-long employee". Life- long meaning 1st and only job or life-long meaning produced and hired. Hmmmmm. Vickers ambiguous death - In a movie laced with brutal and detailed deaths why do a pg-13 cut-away death for Vickers? I say it was done on purpose. It does add flexibility to writing the next story line. And for those that say, "Vickers is dead, the ship fell on her!" Well the ship technically fell on Shaw too, but she was saved by a few well placed big rocks and a decline in the surface. When Vickers kisses Peter Weyland hand, he pulls it away (in disgust perhaps? I'm not sure). Just odd. If Vickers is not an android/synthetic, she is something else. She sure isn't the Hell Peter Weyland's daughter. Plus he is 103 years old in that scene on Prometheus. Lets say Vickers is 40. Weyland had her at 63? Maybe. Things about Vickers that made me say "Hmmmmm..." Any thoughts?

I think #3 is still possible but the rest sound like they were pulled out of the recycle bin from the set of Zardoz.

Although I'm not in agreement that these theories are what I would've stood behind; I think calling them 'dumb' is pretty inconsiderate. This movie inspires us all to ask questions and come up with possible plot fillers. So really everyone's theories are what the director / writer wanted; to get us thinking. :)