I've just posted a significantly updated version of a paper I've been working on for a while that sketches my favored account of natural kinds (a loosening of the Homeostatic Property Cluster account). It's still quite drafty: bracketed notes sprinkled about request some specific help/advice, and it clearly needs to be expanded in places and cut down in others. In particular, I'm not certain that I'm really in a position to say something about species as a case-study in the last section. I worry that it just raises more questions than it answers. So any opinions about that would be most welcome. Feel free to post in the comments or simply email me.
"A Different Kind of Property Cluster Kind" [PDF]