“Decisions that were rational and justifiable according to social norms nevertheless have been known to leave the decision makers troubled by negative emotional consequences. These individuals, who have gone through great pains to act ethically and responsibly, may subsequently experience entirely unanticipated feelings of guilt, shame, and anger. Logically and ethically, by society’s standards they have done nothing “wrong,” and yet they are reacting as if they suddenly discovered they are responsible for someone’s undeserved suffering.”