Falko quoted The Dark Forest by Cixin Liu
This is the second novel in the "Remembrance of Earth’s Past" near-future trilogy. Written by …
He had been sent to the largest hospital in the city, where expert psychiatrists had been powerless to help him, although they had proposed a novel idea, which Luo Ji and the suburban officials helped carry out. As in Daudet’s “The Siege of Berlin,” or the old Golden-Age film Good Bye, Lenin!, why not fabricate a fictional environment in which humanity had failed?
— The Dark Forest by Cixin Liu (Page 436)
Wow, a reference to a German movie.