
Contents
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41.1 Introduction 41.1 Introduction
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41.2 Personal Experience and Subjective Probabilities 41.2 Personal Experience and Subjective Probabilities
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41.3 The Measurement Problem 41.3 The Measurement Problem
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41.4 Decoherence 41.4 Decoherence
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41.5 Recontructing the Quantum Formalism from Probabilities 41.5 Recontructing the Quantum Formalism from Probabilities
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41.6 EPR and Non Locality 41.6 EPR and Non Locality
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41.7 Is QBism an Epistemic Interpretation? 41.7 Is QBism an Epistemic Interpretation?
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41.8 QBism and the No-Go Theorems 41.8 QBism and the No-Go Theorems
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41.9 Criticisms 41.9 Criticisms
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41.10 Discussion of Some Issues 41.10 Discussion of Some Issues
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41.11 Comparison with Convivial Solipsism (ConSol) 41.11 Comparison with Convivial Solipsism (ConSol)
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41.12 Conclusion 41.12 Conclusion
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Acknowledgments Acknowledgments
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References References
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41 Is QBism a Possible Solution to the Conceptual Problems of Quantum Mechanics?
Get accessResearch Director, Le Centre National de la Recherche Scientifique (CNRS), l'École normale supérieure Paris-Saclay Paris-Saclay, France
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Published:19 May 2022
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Abstract
QBism is a recently developed version of Quantum Bayesianism. QBists think that the primitive concept of experience is the central subject of science. QBism refuses the idea that the quantum state of a system is an objective description of this system. It is a tool for assigning a subjective probability to the agent’s future experience. So quantum mechanics does not directly say something about the “external world”. A measurement (in the usual sense) is just a special case of what QBism calls experience and this is any action done by any agent on her external world. The result of the measurement is the experience that the agent gets from her action on her personal world. For QBists, this way of seeing the measurement helps rejecting any non-local influences. We will examine if these claims are robust and will show that a certain number of issues needs to be clarified in order to get a coherent picture. Depending on the way these necessary clarifications are made, the global image given by QBism can vary from pure instrumentalism to interpretations making the observer play a radical role.
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