In 1957, Hugh Everett III believed he had solved the infamous measurement problem in quantum mechanics by explaining probability as an illusion in an evolving, deterministic universe of universes. His “relative state” theory horrified Niels Bohr, who treated Everett’s doctoral thesis (written under the guidance of John Wheeler) with disbelief and scorn.
Everett’s theory was reborn as the “many worlds” interpretation of quantum mechanics in the 1970s. Yet despite his idea’s growing popularity, Everett never wrote another word about quantum mechanics. Instead, he worked on military operations research, designing nuclear missile targeting software. In this lecture, investigative journalist and Everett biographer Peter Byrne traces how Everett’s theory evolved over the course of his often-troubled life.