Observation and Quantum Objectivity

Philosophy of Science 80 (3):434-453 (2013)

Authors
Richard Andrew Healey
University of Arizona
Abstract
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, differently situated agents agree on the objective content of statements about the values of physical magnitudes. In more realistic circumstances quantum Darwinism also permits differently situated agents equal observational access to evaluate their truth. In this view, quantum theory has nothing to say about consciousness or conscious experiences of observers. But it does prompt us to reexamine the significance even of everyday claims about the physical world
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DOI 10.1086/671106
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The View From Nowhere.Thomas Nagel - 1986 - Oxford University Press.
Making It Explicit.Isaac Levi & Robert B. Brandom - 1994 - Journal of Philosophy 93 (3):145.
The View from Nowhere.Thomas Nagel - 1986 - Revue de Métaphysique et de Morale 92 (2):280-281.

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