Another observation: the Shaw & Holloway bedroom scene here is a completely alternate scene, and it hints at Shaw's parents dying of ebola. No mention made of her infertility whatsoever. What this likely means is that her infertility is a result entirely of rescripting and reshoots--so instead of the "Ebola killed my daddy!" subplot of the original, Lindelof and Scott decided to sloppily do both that AND the "I can't make life!" thing. In the original cut, the shock wouldn't come from Shaw being infertile, but just for being three months pregnant. THEN David drops the ebola line, revealing what killed her parents after Shaw's foreshadowing about her parents dying in Africa of an infection from this alternate scene.
Basically, this script was just a mess of ideas that kept being revised even while shooting, and the theatrical cut reflects that to a sad degree.
