this is what you ' re worried about m a n a g e m e n t g u i d e c o m p a r t m e n t s y ndromecausestreatmentsbut we don ' t know . see a doctor <| sep |> Yes there is never a problem with selling a ticket . You may not get what you paid for it though . <| sep |> Well her knowledge of the future would impact her every decision , but she doesn ' t get that ability until she makes contact with the Heptapods and begins to learn their language . It ' s really not clear whether the future in this universe is set in stone or if it can be altered . Every instance we see of someone making a choice that impacts the future , they make the choice that they already know the outcome to . Amy Adams chooses to have a baby , and the Heptapods choose to come to Earth . If they wouldn ' t have came to Earth then we could assume that we wouldn ' t have been able to help them , but if that were the case then there wouldn ' t even be a movie . And yeah , it gets messy when you try to break it down like that .