We took a trip through decades of the genre and came up with a list of the most important and best hard science fiction movies of all time. They are the essence and the foundations of the book of sci-fi rules that’s still being written as we, the audience, become much more self-aware of our relationship with technology, the future, and whatever those two will bring.
https://en.wikipedia.org/wiki/Arrival_(film)
If you’re trying to say that the fact that they invented a realistic language for the film makes it hard SF, I think that’s quite a stretch. What’s the basis for
spoiler
a language changing a human’s concept of time and allowing them to remember the future
?
The Sapir-Whorf hypothesis, though decades old & sounding like it’s from Star Trek, is the basis, from actual linguists. Highly implausible for humans & long outdated, but as the film’s linguist consultant quips, “for aliens, all bets are off.”
https://en.m.wikipedia.org/wiki/Linguistic_relativity
fiction
I don’t think we’re connecting here. Hard science fiction is science fiction with an emphasis on scientific accuracy or plausibility. It’s sort of a subgenre, and this list is about movies in that subgenre. It doesn’t mean that there aren’t great SF movies outside of that subgenre, but this isn’t about those.
Although now I have to question the inclusion of Interstellar on this list, because it gets pretty far out there as well, especially at the end.