My main philosophical interest all along has been in the philosophy of social science, and I’ve found Carnap interesting as a refreshingly different perspective on that subject (which wasn’t his subject) from the currently most popular ones, which I have to admit I mostly find pretty dreary — especially the endless wallowing in “social ontology,” or “social ontologies.” (So you can see how one might find Carnap’s rejection of ontology refreshing.)
I haven’t had much time to work out my ideas on social science over the past couple of years (since my paper with Sheilagh Ogilvie on evidence in social and economic history, and a related review article), but I’m getting back to them, and was recently invited to post something about them (particularly as they apply to language) on the site History and Philosophy of the Language Sciences. This post is just a small corner of a much larger conception, but may be of interest to some readers of this blog as it focusses on philosophy of language, and the nature of meaning, from an empirical point of view. I think the connections to Carnap will be obvious.