After watching Arrival, I read up on it. Many posts online talk about the aliens saying they'll need help in 3,000 years. So I watched it again when Louise talks to them 1-on-1. They only speak in their language, no translation. On a whim, I turned subtitles on, in the subtitles we see what they're saying. Are all these posts from folks who watched with subtitles or was it mentioned somewhere else in the movie and I missed it?