This is a claim frequently urged, but I have yet to see it properly defended.
Teague Tubach: Physicalism and naturalism are not the same thing. Vic's blog and several comments here are confused about this, it seems.
I guess I do agree that they are different, all right. But how are they interestingly different, Teague? In physicalism, the basic stratum is the physical, and something can't be physical unless it lacks intentionality, subjectivity, normativity, and purpose. Everything else is a system byproduct of physics, which has nothing in it containing those four characteristics.
Naturalists, I suppose, could refuse to call the basic level the physical if they wanted to. But where would that get us? At the end of the day, we have to either affirm or deny that the mental, as I have described it, is operating causally at the most basic level of analysis. There could be naturalisms, I suppose, that were distinct from physicalism, but they would have exactly the difficulty that I have been posing for physicalism.