Russellian Monism and Ignorance of Non-structural Properties

: Russellian monists argue that non-structural properties, or a combination of structural and non-structural properties, necessitate phenomenal properties. Different Russellian monists offer varying accounts of the structural/non-structural distinction, leading to divergent forms of Russellian monism. In this paper, I criticise Derk Pereboom’s characterisation of the structural/non -structural distinction proposed in his Consciousness and the Prospects of Physicalism and further work. I argue that from Pereboo m’s characterisation of structural and non-structural properties, one can formulate general metaphysical principles concerning what structural and non-structural properties necessitate. These principles undermine the claim that non-structural properties – either alone or in combination with structural properties – necessitate phenomenal properties. Moreover, these principles are not affected by our supposed inability to conceive of non-structural properties in a manner conducive to the success of conceivability arguments.