The Arrival is imo one of the best Sci-Fi films ever made. It blew my mind when I saw it and I was so engrossed. I do agree on your point about going deeper into the linguistics would have been nice though in a film it's hard to really have the time for it. While I think the extras on the BD are really good a proper in depth piece on that element of the film with real world experts explaining it would have been most appreciated as its clear those working on the film did their research.Arrival - ★★★★½
Really, really enjoyed this. A whole movie about attempting to translate the language of the alien invaders to find out why they're here, sounds pretty boring but ending up being really compelling. Though I'm not particularly knowledgeable about linguistics, it is something that I have a minor interest in, and my biggest issue with the film is that, maybe, they didn't lean into that enough. The scene with Adams explaining why they first have to make sure the aliens understand concepts like walking, eating, or what a question even is before asking them their purpose on Earth was great, and I would've loved to see a lot more of that sort of stuff. Granted, that might not sit well with your average moviegoer though. The revelation made somewhere around the mid-point is also brilliant and makes you rethink everything you've seen up to that point. Smart, sombre and really fantastic sci-fi.
But yeah I loved the film especially since (very minor spoiler)
the twist is (so long as your paying attention) not to obtuse which means if your paying attention you'll realize it before they go fully into showing it. Now I didn't fully understand everything in that twist but it played a huge part in my personal enjoyment of the film because the enjoyment of putting together the puzzle pieces and realizing the picture before it's completed
I obviously fully echo Joe's review and if anyone reading this hasn't seen the film yet they should really give it a go.