Title: Co-intensional Properties and Running Afoul of Ockham’s Razor

Abstract: Hyperintensionalists like myself hold that there are distinct but co-intensional properties. However, intensionalists object that accepting such properties violates Ockham’s Razor, the principle of parsimony that tells us that things should not be multiplied more than is necessary (all else being equal). After I distinguish between the qualitative parsimony and quantitative parsimony readings of Ockham’s Razor, I present two versions of this objection: the qualitative parsimony objection and the quantitative parsimony objection. I then give a reply to each version that exploits the fact that intensionalists accept that there are distinct but co-extensional properties. The upshot is that accepting co-intensional properties does not obviously violate either the qualitative parsimony or quantitative parsimony readings of Ockham’s Razor any more for the hyperintensionalist than accepting only co-extensional properties does for the intensionalist.