“First Things First”: An Inquisitive Plausibility-Urgency Model

There is a fruitful line of work in incorporating questions into epistemic logic (van Benthem and Minică 2009; Baltag et al. 2016; among others); among others). Based on the viewpoint that communication is a process of raising and resolving issues, inquisitive semantics introduces a uniform notion of meaning for statements and questions, thus can serve as a suitable device for this purpose. For instance, Inquisitive Plausibility Model (Ciardelli and Roelofsen 2014) is able to combine questions with the Epistemic Plausibility Model (IPM) (Baltag and Smets 2006a, b) to capture not only the belief and knowledge of agents, but also the issues they entertain. Building on this, we develop an Inquisitive Plausibility-Urgency Model (IPUM), which not only allows us to model knowledge, belief and issues, but also the urgency of the issues, hence lead us to towards formalizations of more dynamics of questions.