konrad scheffler tnqcnlmancalacbiouctacza tue 12 jul 2005 gzrdaeecsberkeleyedu wrote consider following line reasoning let p proposition ronald born new york p infer q ronald born united states q infer r possible ronald born new jersey thats inference q prior learning q r description state knowledge regarding whether ronald born new jersey learning q change least description state knowledge nonquantitative presented hand p infer possible ronald born new jersey arrived contradiction wrong note answer question familiarity modal logic needed nothing wrong learning p state knowledge changes p q inference different q alone paradox way problem arise use reasoning framework accommodate way beliefs change knowledge added konrad wed 06 aug 2008 163817 0200 uai paradox