 In the last three subsections, we distinguished a number of distinct notions that are characterised by Lewis’s three characterisation: locality, duplication preservation, and several different kinds of interiority. We now need to address the question of whether there is a single notion of intrinsicality, and, if there is, which of these notions is it? More precisely, we need to determine whether there is a single notion that philosophers typically use ‘intrinsic’ to express, and, if so, which notion is it.