How Arrival could've ended...
Humans: Why are you here?
Aliens: Use Weapon.
Humans: Nice trolling, now why are you really here?
Aliens: To save ourselves later on! So, use that weapon already.
Humans: Still trolling I see, what do you want from us?
Aliens: To save ourselves later on... Time isn't linear you dumb ape.
Humans: BLOCKED! UNFRIENDED!
Enjoy these words, for one day they'll be gone... All of them.