부산대학교 도서관

Summary: ``In the published version of Hugh Everett III's doctoraldissertation [{\it On the foundations of quantum mechanics}, Dr. Diss. Ser.,Pub. no. 23,816, Univ. Microfilms, Ann Arbor, MI, 1963], he inserted what hasbecome a famous footnote, the `noteadded in proof'. This footnote is often the strongest evidence givenfor any of various interpretations of Everett (the many worlds, manyminds, many histories and many threads interpretations). In this paperI will propose a new interpretation of the footnote. One that issupported by evidence found in letters written to and by Everett; onethat is suggested by a new interpretation of Everett, an interpretationthat takes seriously the central position of relative states inEverett's pure wave mechanics: the relative facts interpretation. Ofcentral interest in this paper is how to make sense of Everett's claimin the `note added in proof' that `all elements of a superposition (all`branches') are `actual,' none any more `real' than the rest.'\,''