The most popular conceptions of democratic legitimacy incur in serious difficulties in dealing consistently with two dimensions of democratic legitimacy which seem to be naturally associated with it: the procedural dimension, associated with the fairness of the decision making process; and the epistemic dimension, associated with the correction of the outputs. In this paper I argue that such tension arises from the adoption of a “veritistic-consequentialist” social epistemology; it is possible to deal with that tension by replacing this problematic epistemological (...) conception with a pragmatist procedural social epistemology, and c) such replacement leads institutional design to an experimentalist orientation. (shrink)