There’s a very interesting paper by Marta Sznajder in the latest Studies in History and Philosophy of Science about Carnap’s late (posthumously published) writings on inductive logic, especially his “Basic System” published by Dick Jeffrey in 1980. She focuses on Carnap’s introduction of “attribute spaces” to give structure to the semantics of the “world” to which properties are attributed; particular observations can be thought of then as points in such an attribute space, whose geometry is determined by the chosen linguistic framework (p. 70). There is an obvious continuity here with the structural characterization of the “world” in the Aufbau, a continuity Sznajder mentions (p. 65) but doesn’t develop. (I do hope someone follows this up soon – another obvious indication of the lifelong continuity, and overall unity, in Carnap’s thought that I am always banging on about!) What she does discuss very interestingly Continue reading →