Discussion and Deliberation
Virtually all of our knowledge is second-hand, learned from others. In ideal deliberative settings, such as Habermas’s ‘ideal speech situation’, learning from others works well because participants are challenged to provide evidence and be consistent in their arguments. Not all real-world deliberation lives up to such high standards, but even non-ideal deliberation can be epistemically advantageous. We investigate five ways how: by improving voter competence; by reducing positive correlation; by incentivizing more sincere voting; by making the decision problem more truth-conducive; and by changing the decision problem in epistemically beneficial ways. The chapter ends with the conjecture that the ‘Deliberation Effect’ will boost group competence at least a little.