This volume investigates the epistemological consequences of the extended cognition hypothesis, which posits that external environmental features can function as constituent parts of cognitive processes. The contributors, a group of prominent philosophers and cognitive scientists, analyze how the boundaries of knowledge shift when cognitive systems are viewed as distributed rather than localized within the brain. The text provides a rigorous framework for evaluating how this shift impacts traditional notions of justification, belief, and intellectual agency.

Experts identify this volume as a significant contribution to the ongoing debate surrounding the extended mind, noting its high level of academic rigor. Readers frequently highlight the density of the prose, which is intended for advanced students and researchers in philosophy and cognitive science.