 One problem for this view is that it is virtually indistinguishable from a Quinean view according to which a physical object is just “the content, however heterogeneous, of some portion of space-time, however disconnected and gerrymandered” (Quine 1960, p. 171). Our sortals, according to a type of Quinean, are used to pick out definite filled portions, and any and all of these are objects. What Sidelle calls ‘stuff’ Quine (or Jubien in 1993) is happy to call an ‘object’. If Sidelle’s stuff talk is inter-translatable into Quinean thing-talk then there is merely a terminological difference between the posit of World-Stuff and the posit of arbitrary things.