If she could see everything that was ever going to happen , wouldn ' t that knowledge ' feed back ' into every decision she made ? And the aliens came to influence actions on Earth so we could do something for them far in the future . why did they even need to come if they already knew what was going to happen ? She seemed to describe her choice to have her daughter anyway as something she considered knowing what would happen to her and decided on . if you can reliably see the future or all time at the same time that must mean time is immutable , otherwise the future would be constantly changing based on your decisions and actions . That would mean that it would be impossible to see the future reliably , and you ' d be in the same boat with the poor schlubs that are stuck in the present . It always winds up being some kind of paradox when you talk about time fluidity .