Bohr was forever trying to take his insights into the physical nature of the world and apply them to human relations. As the historian of science Jeremy Bernstein later wrote: “Bohr was not satisfied to limit the idea of complementarity to physics. He saw it everywhere: instinct and reason, free will, love and justice, and on and on.” He quite understandably saw it in the work at Los Alamos too. Everything about the project was fraught with contradictions. They were building a weapon of mass destruction that would defeat fascism and end all wars—but also make it possible to end all
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