 By contrast, Neurath never advocated methodological solipsism. Consider that his complex conception of the form of protocol statements (1932b) explicated the concept of observational evidence in terms that expressly reflected debts to empirical assumptions which called for theoretical elaboration in turn. For unlike the logician of science Carnap, who left it to psychology and brain science to determine more precisely what the class observational predicates were that could feature in protocol statements (1936/37), the empirically oriented meta-theoretician of science Neurath was concerned to encompass and comprehend the practical complexities of reliance on scientific testimony: the different clauses (embeddings) of his proposed protocol statements stand for conditions on the acceptance of such testimony (see Uebel 2009). In addition, Neurath’s theory of protocol statements also makes clear that his understanding of physicalism did not entail the eliminative reduction of the phenomenon of intentionality but, like Carnap (1932c), merely sought its integration into empiricist discourse.