Empirical faithfulness and typicality: a pragmatic reading of Everett's pure wave mechanics

Everett's Relative State Formulation is one of the most famous and debated interpretations of Quantum Theory. Further deepening of the debates has been made possible by the discovery of his unpublished notes and manuscripts. My purpose is to examine Everett's ideas about physical theories, and show that his understanding of actual experience can be put into correspondence with the latest forms of constructive empiricism and empirical adequacy: the problem of †˜extra structure', which is the reason for metaphysical interpretations, can be solved by using a pragmatic criterion to choose in which way the theory should correspond to empirical evidence. A quantitative justification for probabilities in Everettian context is given in terms of typicality.