Search the entire archive like a dossier index.

Post-Biological Alien Civilizations

Post-biological alien civilizations are one of the most important ideas in advanced SETI and civilization theory. Usually associated with Steven J. Dick’s argument for a postbiological universe, the concept proposes that sufficiently old technological societies may transition from biological evolution to machine-based, digital, or substrate-independent intelligence, fundamentally changing how such civilizations would survive, expand, and reveal themselves to observers like us.