 Nonetheless, Pautz (2014, 3.5) has replied that this partial error account cannot be reconciled with certain types of possible intersubjective difference. So, suppose instead we accept that the mel scale is well-founded and that it accurately captures essential relationships among pitches. This does not by itself imply a projective or subjective theory of pitch. Pitches might be dispositions to produce certain kinds of experiences, or they might be simple or primitive properties. It also is open to seek a more adequate physical candidate for pitch. For instance, pitches might be far more complex physical properties than frequencies. Such physical properties may be of no interest in developing the simplest, most complete natural physical theory, but they may be anthropocentrically interesting.