Starting from the assumption that decision situations in economic contexts are characterized by fundamental uncertainty, the paper argues that the decision-making of intentionally rational actors is anchored in fictions. “Fictionality” in economic action is the inhabitation in the mind of an...

Written in an informal way, this book is addressed to philosophers or cognitive scientists curious of how economics deals with cognition and to graduate students in economics eager to discover how economics evolves. It aims at extending the framework of game theory in order to better fit with...