“Ylym Dark Forest” is not a single definition. It is a question. It asks:
In the Ylym Dark Forest, civilizations generally fall into three distinct evolutionary tiers. 1. The Hiders (The Silent Majority) Ylym Dark Forest
The second element, "Dark Forest," has a much more recent and well-defined origin in popular culture. It is the central thesis of Chinese science fiction author Liu Cixin's acclaimed novel, The Dark Forest , the sequel to his Hugo Award-winning The Three-Body Problem . “Ylym Dark Forest” is not a single definition