  Quantum Bayesianism, or QBism, is a recent development of the epistemic view
of quantum states, according to which the state vector represents knowledge
about a quantum system, rather than the true state of the system. QBism
explicitly adopts the subjective view of probability, wherein probability
assignments express an agent's personal degrees of belief about an event.
QBists claim that most if not all conceptual problems of quantum mechanics
vanish if we simply take a proper epistemic and probabilistic perspective.
Although this judgement is largely subjective and logically consistent, I
explain why I do not share it.
