Friday, August 27, 2010

Social Epistemology

``The veritistic approach to social epistemology aims to be evaluative or normative rather than purely descriptive or explanatory. It seeks to evaluate actual and prospective practices in terms of their impacts on true versus false beliefs. Although truth may have no explanatory role to play in the social studies of knowledge, it can play a regulative role. How can truth play a regulative role, it may be asked, unless we already have ways of deciding what is true? How can the social epistemologist assess the truth-propensity of a practice unless she already has a method of determining whether the beliefs caused by the practice are true or false? But if she has such a method of determination, why bother with social epistemology? In answer to these questions, it is sometimes possible to demonstrate mathematically that a certain practice would have certain veritistic properties. For example, Goldman indicates that a particular (difficult to instantiate) practice of Bayesian inference has a general propensity, on average, to increase the veritistic properties of one's beliefs (Goldman 1999: 115–123). Similarly, it can be shown mathematically that a certain mode of amalgamating expert opinions in a group yields greater group accuracy than other modes of amalgamation (Shapley and Grofman 1984; Goldman 1999: 81–82). Finally, a practice can sometimes be judged veritistically unsatisfactory when later and better evidence shows that many judgments issued under its aegis were false. The medieval practice of trial by ordeal was abandoned in part because it was shown that the ordeal had produced numerous erroneous judgments of guilt. This emerged when voluntary confessions were later obtained from different people, or new eye-witnesses came forward.''

From SEP.

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