 QBists avoid this problem by denying that a quantum state (even incompletely) describes the system to which it assigned. Any user of quantum theory assigns his or her personal quantum state on the basis of available information, subject only to the normative constraints of quantum-Bayesian coherence. This state assignment need conform neither to “the way that system really is”, nor to the state assignments of other users. Quantum mechanics is a single user theory, and any coincidence among states assigned by different users is just that—coincidence. An agent may reassign a state on the basis of newly acquired information, perhaps described as observation of the outcome of a measurement. When this happens, the new state is often not continuous with the old state. This represents no physical discontinuity associated with measurement, but merely reflects the agent’s updated epistemic state in the light of experience.