The Decombination Problem for Cosmopsychism is not the Heterogeneity Problem for Priority Monism

In this paper I look at a recent proposal from Yujin Nagasawa and Khai Wager to avoid the de-combination problem for the view called ‘cosmopsychism’. The pair suggest that the de-combination problem can be solved in the same way that the problem of heterogeneity for Schaffer’s priority monism can be solved. I suggest that this is not the case. They are not the same problem and the solutions to the heterogeneity problem do not work for the de-combination problem.