In Good Form Arguing for Epistemic Norms of Credence

The main topic of the book is how to argue for formal epistemic norms of credence. The author advocates formal justificational pluralism, suggesting that it is reasonable to use various formal tools, e.g. different scoring rules, in arguments for synchronic and diachronic norms. Leszek Wroski first examines various occasions on which modern formal epistemology fails to live up to its formal label. Among the topics considered next are: the Dutch Book Theorem and Arguments (which fails according to the author), a novel version of the Principal Principle, and a constructive approach to higher order probabilities. The author argues then that the best method for dealing with various belief update problems is that of minimizing inverse relative entropy, and defends the claim that for evaluating an agents credal state at a single moment the Brier Score seems to be the way to go.