Observation and Quantum Objectivity

Observation and Quantum Objectivity

The paradox of Wigner’s friend challenges the objectivity of description in quantum theory. A pragmatist interpretation can meet this challenge by judicious appeal to decoherence. On this interpretation, quantum theory provides situated agents with resources for predicting and explaining what happens in the physical world— not conscious observations of it. Even in Wigner’s friend scenarios, di¤...

Aspects of Objectivity in Quantum Mechanics

The importance of the observer in science

The concept of complexity (as a quantity) has been plagued by numerous contradictory and confusing definitions. By explicitly recognising a role for the observer of a system, an observer that attaches meaning to data about the system, these contradictions can be resolved, and the numerous complexity measures that have been proposed can be seen as cases where different observers are relevant, an...

Mass Observation Report on Juvenile Delinquency

This book claims to be a thorough examination the whole problem of juvenile delinquency and Is a product of research by mass observation. Massr Observation sets out to ascertain the facts as accurately as possible, but this book does not suffer from objectivity. The attitude to specialists ln psychological medicine is conflicting. The author quotes an attack on these medical men from an article...

On Classical and Quantum Objectivity

We propose a conceptual framework for understanding the relationship between observables and operators in mechanics. To do so, we introduce a postulate that establishes a correspondence between the objective properties permitting to identify physical states and the symmetry transformations that modify their gauge dependant properties. We show that the uncertainty principle results from a faithf...