For 10 points, identify this concept, which holds if, for two sets of properties A and B, no two things can be different with respect to A-properties without also differing in B-properties.
Terrence Horgan has proposed a "regional" variety of this concept. John Haugeland argued against token identity theory by promoting a weak version of this concept. In his paper "Mental Events," Donald Davidson promoted his theory of anomalous monism, which denied that there were psychophysical laws, but which was consistent with this thesis. A famous paper arguing that the "global" variant of this concept was equivalent to its "strong" variant was written by Jaegwon Kim about the different "Concepts of" this idea, which is implied by reductionism. For 10 points, identify this concept, which holds if, for two sets of properties A and B, no two things can be different with respect to A-properties without also differing in B-properties.
Terrence Horgan has proposed a "regional" variety of this concept.
supervenience