Uncertainty, trust and responsibility are key factors for communication, knowledge and the common life in society. A certain balance between them is crucial to face the main challenges of today's societies (pandemics, climate change, hybrid wars, etc.). From a double epistemological and ethical perspective, the project analyzes the factors that disturb this balance, alter the patterns of rationality and common sense, and contribute to the rise of anti-democratic and anti-scientific positions. The socio-political and cultural implications of these dynamics are explored,...