A Critic Looks at QBism
نویسنده
چکیده
This chapter comments on that by Chris Fuchs on qBism. It presents some mild criticisms of this view, some based on the EPR and Wigner’s friend scenarios, and some based on the quantum theory of measurement. A few alternative suggestions for implementing a subjectivist interpretation of probability in quantum mechanics conclude the chapter. “M. Braque est un jeune homme fort audacieux. [...] Il méprise la forme, réduit tout, sites et figures et maisons, à des schémas géométriques, à des cubes. Ne le raillons point, puisqu’il est de bonne foi. Et attendons.”1 Thus commented the French art critic Louis Vauxcelles on Braque’s first oneman show in November 1908, thereby giving cubism its name. Substituting spheres and tetrahedra for cubes might be more appropriate if one wishes to apply the characterisation to qBism — the view of quantum mechanics and the quantum state developed by Chris Fuchs and co-workers (for a general reference see either the paper in this volume, or Fuchs (2010)). In this note, I shall not comment on other possible analogies, nor shall I present an exhaustive critical review of qBism (for an excellent one, see Timpson ∗Department of Philosophy, University of Aberdeen, and Institut d’Histoire et de Philosophie des Sciences et des Techniques (CNRS, Paris 1, ENS). Address for correspondence: Department of Philosophy, University of Aberdeen, Old Brewery, High Street, Aberdeen AB24 3UB, Scotland, U.K. (e-mail: [email protected]). “Mr Braque is a very bold young man. [...] He despises form, reduces everything, places and figures and houses, to geometric schemes, to cubes. Let us not rail him, since he is in good faith. And let us wait.” (My translation from Vauxcelles (1908).)
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تاریخ انتشار 2014