Great movie; explanation below for those who misunderstand it

Rating: 10/10 (15 February 2017)

I think it's telling that the people who like this movie, really like this movie and those that don't, really don't. From the reviews on this site of those who didn't like the movie, it appears that these people didn't pick up on the plot details and the implications of the plot structure which is the whole point of the story. The movie moves along deceptively slowly; I say "deceptively" because the viewer needs to pay attention. There's actually a lot going on and for those mistaking the movie for being slow, will miss out on an intellectual and emotional ride that makes the thoughtful viewer reflect upon their own decisions and relationships.
Although I doubt that those who have watched it and thought little of the movie will likely stop and reconsider, never mind go back and read a positive review explaining why the movie's great, I nevertheless feel compelled to explain some of what it is that these negative reviewers missed:
{It should go without saying that spoilers abound:}
The structure of the movie is jarring at first with scenes of the daughter interspersed with Louise (the main character)'s first contact with the aliens. This structure is intentional and follows the source material faithfully. It's done in both the movie and its source material short story, to highlight that contact with the aliens have affected Louise's thought process so much so that she is in fact (major spoiler and plot point here) "remembering the future". What the audience thought at first as a depiction of Louise's past experience with the death of her daughter possibly colouring her interaction with the aliens, is in fact, we find out near the end, instead a memory of her inevitable future.
And this answers a number of questions many misunderstanding reviewers point out in disgust, one of which being why the aliens, being obviously more technologically advanced than we are, don't just communicate in our language; in fact this is a major plot point - the reason for the aliens being here on earth is to force humans to learn their language. The entire point of their visit, to spell it out for the clueless, is that by forcing us to learn their language, it forces us to see the universe from their perspective, which ultimately gives humans a similar ability that the aliens have to see into the future. It is their gift to humanity and since Louise immersed herself in their language and therefore gained their ability to see into the future, as demonstrated by the flash-forwards we see from the beginning of the movie, they have succeeded in what they came to earth to achieve. Having achieved what they came here to do, is the reason they leave at the end.
The above points brought about some heady realizations and questions for me such as:

Knowing that my child would die at a very young age, and with all the growing pains, difficulty of raising a child and aggravation as depicted in the movie (and let's face it, in real life), would I make the decision to have her in the first place? How much do we love our children and would it have been better that they never been born? Is it selfish to have this child knowing she will die before 'full potential' or is this in itself what is selfish, to not have her solely because of my own inevitable heartache?

Being bilingual, I have experienced how different languages affect my fundamental thinking. What they implied in the movie that learning and thinking in a different language gives a person a different perspective and even forces a person to think a certain way, from experience, is a real thing. The science fiction part of that is of course, thinking in this new alien language can cause anyone to be able to see the future. Really knowing a different language and how that changes your thought process is an interesting concept that single-lingual people may not realize exists. And maybe for some multi-lingual people, also brings to consciousness that a different language can shape how you view the world. And isn't that part of what makes stories great, the ability to make you experience and realize things that you wouldn't otherwise get to experience?

There are other realizations and heady questions arising from this movie. If only people realized these points instead of dismissing liking this movie as a case of pretentiousness of reviewers and intellectuals.