Evidence-based epistemic models
The CUNY Graduate Center
We will survey the standard modal logic approach to model the “knowledge vs justified true belief” scenarios, in particular its recent account in Williamson, Timothy “A note on Gettier cases in epistemic logic” Philosophical Studies 172.1 (2015): 129-140. We argue that the “old school” approach by Williamson to model justified belief as a modality without going deeper to the level of individual justifications is rather limited. Whereas it indeed suffices to satisfactory treat Gettier examples with a unique justification in the picture, it fails even on simplest examples with more than one justification, e.g., Russell’s Prime Minister Example. On the constructive side, we offer a principled way to building epistemic models entirely from systems of justifications; standard epistemic models are special cases of these evidence-based epistemic models. New models cover wide range of epistemic scenarios, including Russell’s example, in a natural way.
Professor Artemov holds a Distinguished Professor position at the Graduate Center of the City University of New York, in the Computer Science, Mathematics and Philosophy programs. He is also Professor of Mathematics at Moscow State University, the founder and the Head of the research laboratory Logical Problems in Computer Science. He conducts research in the areas of logic in computer science, mathematical logic and proof theory, knowledge representation and artificial intelligence, automated deduction and verification and optimal control and hybrid systems.