Observation and Quantum Objectivity

  title={Observation and Quantum Objectivity},
  author={Richard Healey},
  journal={Philosophy of Science},
  pages={434 - 453}
  • R. Healey
  • Published 30 July 2012
  • Physics, Philosophy
  • Philosophy of Science
The paradox of Wigner’s friend challenges the objectivity of quantum theory. A pragmatist interpretation can meet this challenge by judicious appeal to decoherence. Quantum theory provides situated agents with resources for predicting and explaining what happens in the physical world—not conscious observations of it. Even in bizarre Wigner’s friend scenarios, differently situated agents agree on the objective content of physical magnitude statements while, normally, quantum Darwinism permits… 

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