I'm intrigued with the following sentence Louise says in *Arrival*:

> 
> If you could see your whole life start to finish, would you change things?
> 
> 
> 

To me (with a limited English language knowledge), what she said above, suggests to me that in the mind of Louise, she has a choice ... so the clearer sentence of her would be something like this:

> 
> If you could see your whole life start to finish, **and you could change it**, would you change things?
> 
> 
> 

[One article](https://www.denofgeek.com/movies/explaining-the-arrival-ending/) I've found says something like this:

> 
> As the ending clarifies, **Louise has a choice** to allow events to occur
> as she currently perceives them… or to not let them happen in this way
> 
> 
> 

[Another article](https://www.theverge.com/2016/11/16/13642396/arrival-ted-chiang-story-of-your-life-film-twist-ending):

> 
> But **Louise made the choice**, even knowing the eventual outcome
> 
> 
> 

So my question is:

*Why did Louise say like that as if she thinks she has a choice which one to decide so she has the ability to change it, while actually she knows that she has not?*

OR

*Did Louise not know that she doesn't have a choice and that's why she say like that?*