Scala and the Spinning Spheres

I have argued that contemporary humeans face a trilemma: either give up temporal parts, deny the humean supervenience of causal relations, or deny the possibility of there being a difference between rotating and nonrotating homogeneous spheres. Mark Scala describes an interesting class of seemingly possible objects, spinning and stationary simples; and argues their possibility undermines my argument. I argue that it does not. And I conclude with a more general assessment of the status of objections to humeanism from the possibility of homogeneous objects in motion