I reckon pretty much all discussion of this film will need to happen here instead of in the main review thread.
I'd count myself as extremely intellectually impressed by the film but not fully on board overall. While I'd say it deals with time issues far better than Interstellar, the way that is woven in feels a bit heavy handed, both at the moment, and in hindsight when you know why these "memories" were being interspersed.
But this is definitely a movie for the era, with its focus on linguistics and how the use and varying interpretations of language can have profound effects on how we think and act. One thing that struck me was how Louise discusses that if our language is introduced in the form of chess or mah jongg, some game or contest that has a winner and a loser and is thus zero-sum, that will change the use of language learned by the aliens, and thus how it is reflected back to us and might be interpreted differently. I think about how we talk about the election in almost purely horse-race terms, who won or lost. And granted, having all these individual districts where one person wins and one person loses spurs that. Imagine though if we had a nationwide proportional representation system electing a coalition government based on shares of the vote. Ultimately some views will end up advantaged and others not, but it isn't as immediate. Would this change how we approach politics, would this allow for less zero-sum thinking (which leads to obstructionism) and more non-zero-sum thinking (which the film directly cites), where we can try to find common links. Obviously, the countries that have these systems are far from free of problems, but they do seem to function better (see Patterns of Democracy by Arend Lijphart).
The time concepts feel a bit more abstract and is a bit where the film loses me. I see the benefit of the kind of long vision shaping our ability to relate, but it is taken to a purely supernatural kind of level (which is maybe a weird thing to critique in a film with aliens). Ultimately, this kind of acts as a very good linguistics lecture snuck through to the masses (well, to the degree that this film gets watched) by a slickly designed movie guise. And I couldn't be happier about that, I love interesting lectures.