This volume investigates whether mental states are confined to internal neurological processes or if they are fundamentally shaped by an individual's physical and social environment. The authors, John D. McDowell and Philip H. Pettit, curate a collection of essays that challenge traditional internalist views of the mind. By synthesizing perspectives from various disciplines, the text argues that external factors act as essential components in the formation and function of cognitive states.

Experts frequently cite this collection as a rigorous contribution to the philosophy of mind and cognitive science. Readers often note the academic density of the prose, which is tailored for scholars and advanced students in the fields of social theory and artificial intelligence.