Short abstract (98 words). Reasoning is generally seen as a means to improve knowledge and make better decisions. However, much evidence shows that reasoning often leads to epistemic distortions and poor decisions. This suggests that the function of reasoning should be rethought. Our hypothesis is that the function of reasoning is argumentative. It is to devise and evaluate arguments intended to persuade. Reasoning so conceived is adaptive given humans’ exceptional dependence on communication and vulnerability to misinformation. A wide range of (...) evidence in the psychology of reasoning and decision making can be reinterpreted and better explained in the light of this hypothesis. (shrink)

Governments must determine the legal procedures by which their residents are registered, or can register, as organ donors. Provided that governments recognize that people have a right to determine what happens to their organs after they die, there are four feasible options to choose from: opt-in, opt-out, mandated active choice, and voluntary active choice. We investigate the ethics of these policies' use of nudges to affect organ donor registration rates. We argue that the use of nudges in this context is (...) morally problematic. It is disrespectful of people's autonomy to take advantage of their cognitive biases since doing so involves bypassing, not engaging, their rational capacities. We conclude that while mandated active choice policies are not problem free—they are coercive, after all—voluntary active choice, opt-in, and opt-out policies are potentially less respectful of people's autonomy since their use of nudges could significantly affect people's decision making. (shrink)

Part I: Building blocks. 1. Folk convictions -- 2. Doubts about libertarianism -- 3. Nihilism and revisionism -- 4. Building a better theory -- Part II. A theory of moral responsibility. 5. The primacy of reasons -- 6. Justifying the practice -- 7. Responsible agency -- 8. Blame and desert -- 9. History and manipulation --10. Some conclusions.