ABSTRACT
Elements of logical form must be grammatically distinctive in some significant way. Some psychological investigation of the psychology of reasoning might be interpreted as attempting to discover which rules of logical implication expresses such immediately intelligible connections. The suggestion, then, is that logic is specially relevant to reasoning because logic is specially relevant to explanatory coherence and because reasoning involves trying to improve the explanatory coherence of one’s view. This suggests that, if logic plays a special role in reasoning, that might be because logic has something special to do with explanatory coherence. Logic is built into one’s language and is relatively fixed. Linguists and philosophers of language do put forward hypotheses about the connection between grammatical structure and logical form in sentences of a natural language like English. Logical principles must therefore be manifested as rules of argument. These rules enable a finite representation of one’s view to express infinitely many implications.
