It is important to emphasize that this isomorphism between brain and world is not a matter of some relationship between reality and a map of reality stored in the brain. Maps require interpretation if they are to be about what they map, and both eliminativism and neuroscience share a commitment to explaining the appearance of aboutness by purely physical relationships between informational states in the brain and what they “represent.” The brain-to-world relationship must be a matter of physical isomorphism— sameness of form, outline, structure that doesn't require interpretation.