12.The games Diane (played by Lauren Ridloff) and her students play are real ones Ridloff brought from her personal experiences to the film.
13.Before production, supervising sound editor Nicolas Becker brought Marder to an anechoic chamber — a room designed to absorb all sound — so they could experience what it's like to not hear anything, just the sound of their bodies.
14.The sounds Becker created for Ruben's cochlear implants were based on descriptions.
15.The film was actually in development for about a decade before getting made.
16.And finally, this is filmmaker Darius Marder's first feature film as a director. Previously, he was best known for writing the screenplay for The Place Beyond the Pines.