Wise Choices, Apt Feelings: A Theory of Normative Judgment (1990) develops a general theory of moral judgment and judgments of rationality. Gibbard argues that when we endorse someone's action, belief, or feeling as "rational" or warranted we are expressing acceptance of a system of norms that permits it.
Wise Choices, Apt Feelings: A Theory of Normative Judgment (1990) outlines a broad framework for moral assessment and rationality evaluations. Gibbard asserts that when we endorse someone's action, belief, or attitude as "rational" or warranted, we are expressing endorsement of a set of norms that allows it.