When is it revealed that humans save them in 3000 years? I'm not being argumentative, everywhere I've seen it said in the movie and I've rewatched the scene with her speaking with Costello that last time and I can't find it. It's driving me crazy cause it seems like such a huge part of the movie and I can't find it.

As Costello shows her the symbols in the spaceship, one of the symbol represents Costello informing Louise that humanity will help them 3000 years in the future. It's never explicitly said in English but Costello informs her of this through the Heptapod language; under the symbol he draws/makes, the english translation is displayed which reads "humanity will help us 3000 years from now", or something with that meaning.

Oh ok lol I streamed it and it didn't have the subtitles, thanks so much I thought I was going crazy lol

But then it'll explain too much. I think it's better to leave it for us to guess.

If you choose not to decide You still have made a choice ... I will choose a path that's clear I will choose free will (from "Freewill" by Rush)

There's no need to apologize. The unchangeable, hyper-deterministic course of path that we call our timeline compelled you to write that. There was no "decision" you could have made or "choice" for you.

In another interview he goes into how traumatic that filming was because the studios kept reaching their fingers in and wanted to change things all the time. Apparently at one time they stopped filming for 3 weeks because the studio decided they now wanted to make it all 3d. I haven't read the script, so I can't speak to whether it's good or not, but apparently it was a project that wasn't a lot of fun. Just became very frustrating.