 Fodor (1975) defends RTT+COMP+CCTM by appealing to scientific practice: our best cognitive science postulates Turing-style mental computations over Mentalese expressions; therefore, we should accept that mental computation operates over Mentalese expressions. Fodor develops his argument by examining detailed case studies, including perception, decision-making, and linguistic comprehension. He argues that, in each case, computation over mental representations plays a central explanatory role. Fodor’s argument was widely heralded as a compelling analysis of then-current cognitive science.