 Like many cognitive scientists, Fodor holds that children learn a natural language via hypothesis formation and testing. Children formulate, test, and confirm hypotheses about the denotations of words. For example, a child learning English will confirm the hypothesis that “cat” denotes cats. According to Fodor, denotations are represented in Mentalese. To formulate the hypothesis that “cat” denotes cats, the child uses a Mentalese word cat that denotes cats. It may seem that a regress is now in the offing, sparked by the question: How does the child learn Mentalese? Suppose we extend the hypothesis formation and testing model (henceforth HF) to Mentalese. Then we must posit a meta-language to express hypotheses about denotations of Mentalese words, a meta-meta-language to express hypotheses about denotations of meta-language words, and so on ad infinitum (Atherton and Schwartz 1974: 163).