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This article situates QBism among other well-known interpretations of quantum mechanics. QBism has its roots in personalist Bayesian probability theory, is crucially dependent upon the tools of quantum information, and in latest developments has set out to investigate whether the physical world might be of a type sketched in the philosophies of pragmatism, pluralism, nonreductionism, and meliorism. Beyond conceptual issues, the technical side of QBism is focused on the mathematically hard problem of finding a good representation of quantum mechanics purely in terms of probabilities, without amplitudes or Hilbert-space operators. The best candidate representation involves an entity called a symmetric informationally complete quantum measurement, or SIC. Contemplation of it gives a way to think of the Born rule as an addition to the rules of probability theory, applicable when an agent considers gambling on the consequences of her actions on the external world, duly taking into account a new universal capacity: namely, Hilbert-space dimension. The article ends by showing that the egocentric elements in QBism represent no impediment to pursuing quantum cosmology and even open up possibilities never dreamt of in the usual formulations.
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