"Even if there are necessary pairings, there are lots of ways that there could be rich and varied psychologies with those mental states only weakly interacting with the world or not interacting at all. Even if mental states do cause things, there could be a physically similar world where they don’t cause things."
This fully depends on what your threshold for rich and varied psychology is, because I think "strongly interacting in the world" makes for a pretty good requirement to consider a psychology to be rich and varied. Luhmanns Systems Theory hinges on autopoietic social systems forming through communication originating from autopoietic psychic systems. If you take interaction with the world out if this concept, then the entire building collapses and all that's left is semantic inflation of the term "psychology".
"Even if there are necessary pairings, there are lots of ways that there could be rich and varied psychologies with those mental states only weakly interacting with the world or not interacting at all. Even if mental states do cause things, there could be a physically similar world where they don’t cause things."
This fully depends on what your threshold for rich and varied psychology is, because I think "strongly interacting in the world" makes for a pretty good requirement to consider a psychology to be rich and varied. Luhmanns Systems Theory hinges on autopoietic social systems forming through communication originating from autopoietic psychic systems. If you take interaction with the world out if this concept, then the entire building collapses and all that's left is semantic inflation of the term "psychology".
Ok. I guess early summer was being way too pessimistic. I will take this into account.