“Decision-Making & Belief Change Under Severe Uncertainty: A Confidence-Based Approach” (DUSUCA) ran from 2015 to 2018. It was funded by the ANR (ANR-14-CE29-0003-01) and hosted by the Decision Sciences group of the GREGHEC research laboratory at HEC Paris and the CNRS.


Brian Hill (PI) is Research Fellow at the French National Centre for Scientific Research (CNRS) and CNRS Research Professor at HEC Paris.  After a period as an active researcher in philosophy and logic, his recent interests have been in the field of decision theory. Much of his recent research has been focused on what counts as a rational reaction to severe uncertainty or ambiguity, and as such lies on the boundary between economics and philosophy,

Casey Helgeson was a Postdoctoral Researcher at the GREGHEC laboratory of the French National Centre for Scientific Research (CNRS) and HEC Paris, and is now Assistant Research Professor at the Earth and Environmental Systems Institute at Pennsylvania State University. He holds a PhD in philosophy and a BS in mathematics from the University of Wisconsin — Madison. His research addresses topics in the philosophy of science and at the interface of philosophy, science, and decision making, including modes of inference in contemporary and historical evolutionary biology, treatment of uncertainties in environmental modelling, and approaches to decision making under uncertainty.