“…Most famously this move is seen in the systematicity argument where the compositional syntax of thought is inferred from the compositionality of language (Fodor, ; Fodor & McLaughlin, ; Fodor & Pylyshyn, ). However, this strategy is also found in the productivity argument (Fodor, , , ; Fodor & Pylyshyn, ), visual and auditory systematicity (Cummins et al, ), the tracking argument (Horgan & Tienson, , ), and our capacity for inferential coherence (Crane, ; Fodor, ; Horgan & Tienson, , ). Our mental economy's systematic and productive nature together with the stability of conceptual content, intrasubjectively across time and intersubjectively at any instance, requires that our conceptual systems must be compositional.…”