How Realistic Is the Modeling of Epistemic Democracy?

ABSTRACT The “diversity trumps ability” (DTA) model is often interpreted as a mechanism supporting epistemic democracy. However, as a variety of empirical and mathematical studies have shown, if we attempt to test the realism of the model, it turns out that it points as much toward epistocracy as democracy. This might appear to leave epistocracy with an advantage, since its rationale is not usually thought to rely on the DTA but on the obvious relevance of expertise to making complex decisions. Yet if we apply the same test to epistocracy that we should apply to epistemic democracy—the test of realism—we find that it, too, is unsustainable. This suggests that epistemic democracy and epistocracy alike are indefensible on the basis of the abstract assumptions about diversity and expertise on which the DTA is predicated.