Arrival (II) (2016)
Frequently Asked Questions
Shang whispers "In war, there are no winners. Only widows."
While not 100% clear, Costello answers Louise by saying "Use weapon - in 3000 years, we will need human's help.". It appears the aliens want humans to finally learn to put aside their differences and work together for a better future before they destroy themselves. In 3000 years, humanity's technology would be so far advanced, especially if they had faster than light travel, which Ian suggests Abbott and Costello may have given them the formula for. This would allow humanity to reach the stars and make contact with other civilizations and be able to help out those in need.