Matthew Pusey: Is QBism 80% complete, or 20%?





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Published on Jun 23, 2016

I will outline two views on the status of QBism, one that seems to be presumed in most discussions of the subject, and the other that I read in (or read into!) the writings of QBism’s originators. The former view is that QBism has already provided the main elements of an information-theoretic interpretation of quantum theory, perhaps with a few technical questions on SIC-POVMs and the like remaining. The latter view is eloquently summarised by Fuchs’ statement that “quantum theory is just the start of our adventure. The quantum world is still ahead of us.” I will argue that the QBism under the former view is irreparably linked to dubious ideas from the philosophy of mind (though perhaps not the ideas you expect), whilst QBism under the latter view is a promising research programme.

Matthew Pusey, Perimeter Institute for Theoretical Physics
Information-Theoretic Interpretations of Quantum Mechanics: 2016 Annual Philosophy of Physics Conference
June 11-12, 2016

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