I talked to another person today that swears The Arrival is the greatest scifi movie of the decade. I thought it was completely unrealistic. If aliens came here to talk to us, they are going to be able to speak to us clearly from first contact. We've had enough signals out there to learn our language, so that wouldn't be a problem. We're a species that is still, though not as bad as the Cold War, on the edge of a nuclear release. so why would you show up, strategically (in our minds) position your ships around the globe (because we saw Independence Day!), then leave it to us primitives to decipher what you're saying? Yeah, the language was the gift, but that's goofy. I know it's a movie, but I just don't think any species more advanced than us, would leave it to us to figure out what they are saying!