Qualitative models of rationality: Philosophical foundations and applications. This project aims to establish the qualitative approach to rationality as a viable and attractive choice. Mathematical models of rationality, which aim to formalise the rules of good reasoning and decision making, traditionally assume that beliefs and desires are always given in precise, quantifiable degrees of confidence and value. This assumption is implausibly strong, and alternative, qualitative frameworks have be ....Qualitative models of rationality: Philosophical foundations and applications. This project aims to establish the qualitative approach to rationality as a viable and attractive choice. Mathematical models of rationality, which aim to formalise the rules of good reasoning and decision making, traditionally assume that beliefs and desires are always given in precise, quantifiable degrees of confidence and value. This assumption is implausibly strong, and alternative, qualitative frameworks have been developed to handle the frequent situations in which it fails. These, however, remain incomplete and their foundations poorly understood. The project will address their omissions, secure their conceptual underpinnings and use them to clarify and resolve long-standing philosophical problems.Read moreRead less