 The upshot is that if one associates one’s experience with relative records and if one expects one’s relative sequence of records to be typical in the norm-squared-amplitude sense, then one should expect one’s experience to agree with the standard statistical predictions of quantum mechanics, wherever it makes coherent predictions. And where the standard collapse theory and the Copenhagen interpretation do not make coherent predictions, as in the Wigner’s Friend story, one should expect to see evidence that the linear dynamics always correctly describes the evolution of every physical system whatsoever. So while pure wave mechanics explains why one would not typically observe other branches, it also predicts that other branches are in principle observable, and hence do not represent surplus structure. 