Judgment under radical uncertainty: Epistemic rational heuristics

The special issue “Expanding the boundaries of rationality: Towards new models of decision making for radical uncertainty” addresses the challenge of developing logically sound models of decision making for conditions of uncertainty evading those manageable by established decision making approaches. This editorial characterizes the sought new models and approach as constructivist in nature but neither deductive nor Bayesian in logic: a set of epistemic rationality models for discovering new problems and solutions (“found” either in the real or the artificial world, i.e., either detected or designed) that extend the available bounded rationality models. This editorial offers a map of this territory, positioning the new heuristics identified in this collection of articles in a more general picture of heuristic methods qualifyable as fit to radical uncertainty.