This book investigates the relationship between sensory experience and the formation of justified belief, challenging the prevailing view that experiences are merely propositional attitudes. Alan Millar, a philosopher specializing in epistemology, argues that sensory experiences are better understood as psychological states. He constructs a framework where justified belief arises from the competent exercise of conceptual capacities, specifically those that allow individuals to respond appropriately to their environment. By integrating historical perspectives with contemporary analytical rigor, the author provides a robust alternative to standard representationalist accounts of perception.

Philosophical scholars recognize this work as a significant contribution to the debate on perceptual justification and the nature of belief. Readers frequently note the academic density of the prose, which requires a strong background in analytical philosophy to fully grasp the author's nuanced arguments.