lose gains from specialization. Need for robustness comes from our limited knowledge. Rational dealing with uncertainty … requires to accord the degree of specialization to the reliability of knowledge about the relevant circumstances. In practical …

argues that an appropriate model for dealing with uncertainty keeps the knowledge required by the model from its user in line … with the available knowledge. In particular, it proposes to order state spaces by their “granularity” and “coverage …

and knowledge in individual decision making under ambiguity. Reactions to a natural source of uncertainty (i … actual competence to measure knowledge of politics. This paper found evidence of both preference for ambiguity in the gain …. This paper also shows that a superior knowledge of politics was associated with a preference for ambiguity (i.e., the …