 Certainly the vector-space alternatives of this interpretation of neural networks are alien to folk psychology. But do they justify EM? Even if the propositional contents of folk-psychological posits find no analogues in one theoretical development in cognitive and computational neuroscience (that was hot three decades ago), there might be other aspects of cognition that folk psychology gets right. Within the scientific realism that informed early neurophilosophy, concluding that a cross-theoretic identity claim is true (e.g., folk psychological state F is identical to neural state N) or that an eliminativist claim is true (there is no such thing as folk psychological state F) depended on the nature of the intertheoretic reduction obtaining between the theories affiliated with the posits in question (Hooker 1981a,b,c; Churchland 1986; Bickle, 1998). But the underlying account of intertheoretic reduction also recognized a spectrum of possible reductions, ranging from relatively “smooth” through “significantly revisionary” to “extremely  bumpy”.[5]  Might the reduction of folk psychology to a “vectorial” computational neuroscience occupy some middle ground between “smooth” and “bumpy” intertheoretic reduction endpoints, and hence suggest a “revisionary” conclusion? The reduction of classical equilibrium thermodynamics-to-statistical mechanics provided a potential analogy here. John Bickle (1992, 1998, chapter 6) argued on empirical grounds that such an outcome is likely. He specified conditions on “revisionary” reductions from historical examples and suggested that these conditions are obtaining between folk psychology and cognitive neuroscience as the latter develops. In particular, folk psychology appears to have gotten right the grossly-specified functional profile of many cognitive states, especially those closely related to sensory inputs and behavioral outputs. It also appears to get right the “intentionality” of many cognitive states—the object that the state is of or about—even though cognitive neuroscience eschews its implicit linguistic explanation of this feature. Revisionary physicalism predicts significant conceptual change to folk psychological concepts, but denies total elimination of the caloric fluid-phlogiston variety.