The function of reasoning: Argumentative and pragmatic alternatives

摘要

The question of the function of reasoning is drawing increased attention. One suggestion is that the function of reasoning is argumentative: to find arguments to convince others and to evaluate others' arguments. Darmstadter offers an alternative. According to this pragmatic theory the function of reasoning is to minimally adjust our beliefs so that they remain sound guides for action. This theory is similar to the classical view, which sees reasoning as a way of improving the reasoner's beliefs and decisions. The pragmatic theory shares the classical view's flaws as a theory of the function of reasoning: it does not define reasoning strictly enough, it does not offer a convincing evolutionary rationale for reasoning's existence, it does not make predictions based on this rationale, and it does not properly test these predictions. Darmstadter also points out the importance of the phenomenon of deliberation failures. While I argue that documented deliberation failures are compatible with the argumentative theory of reasoning, Darmstadter's work usefully draws attention to the importance of studying reasoning outside the laboratory and in particular in argumentative situations.