Meta Ontology

In `Location and Perdurance' (2010), I argued that there are no compelling mereological or sortal grounds requiring the perdurantist to distinguish the molecule Abel from the atom Abel in Gilmore's original case (2007). The remaining issue Gilmore originally raised concerned the `mass history' of Adam and Abel, the distribution of `their' mass over spacetime. My response to this issue was to admit that mass histories needed to be relativised to a way of partitioning the location of Adam/Abel, but that did not amount to relativising any fundamental natural intrinsic properties---the latter are all had unrelativised, and (so most perdurantists would say).