Full Idea
Some people suppose my natural properties are distinguished by nature, and hence natural in one world and not another. I intend properties to be natural or unnatural simpliciter, not relative to one or another world.
Gist of Idea
I don't take 'natural' properties to be fixed by the nature of one possible world
Source
David Lewis (On the Plurality of Worlds [1986], 1.5 n44)
Book Reference
Lewis,David: 'On the Plurality of Worlds' [Blackwell 2001], p.60
A Reaction
This is an important warning for the likes of me. I've have begun to doubt the utility of the term 'natural' property, and this reinforces my view.