The fundamental paradox of quantum mechanics is that the theory's own foundational measurements appear to yield indefinite outcomes. Standard conceptions imply that quantities like position or momentum are inherently indefinite in quantum systems. When such an indefinite quantity is measured, the apparatus designed to record the outcome also becomes indefinite. This collection, edited by Richard A. Healey and Geoffrey Hellman, brings together leading physicists and philosophers to explore innovative solutions to this enigmatic issue.

This collection is regarded as a significant contribution to the ongoing debate surrounding quantum measurement. The essays are noted for their depth and the collaborative effort of prominent figures in physics and philosophy. The book is recognized for presenting a range of innovative perspectives on a notoriously difficult problem. It offers a valuable resource for those seeking to understand the complexities and paradoxes inherent in quantum theory.