This is not a trivial exercise, and to do it we rely entirely on scientists who go to work at the national labs because the national labs are exciting places to work. They then wind up getting interested in the weapons program. That is, because maintaining the nuclear arsenal was just a by-product of the world’s biggest science project, which also did things like investigating the origins of the universe. “Our weapons scientists didn’t start out as weapons scientists,” says Madelyn Creedon, who was second-in-command of the nuclear-weapons wing of the DOE, and who briefed the incoming
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