QBism
QBism, short for Quantum Bayesianism, is an interpretation of quantum mechanics. It proposes that quantum states do not represent objective properties of the physical world, but rather subjective degrees of belief held by an agent. The probabilities in quantum mechanics are therefore seen as expressions of an individual's uncertainty about the outcomes of future measurements. This perspective contrasts with many other interpretations that ascribe to quantum states a more direct description of reality independent of an observer.
Key to QBism is the concept of an agent. The agent is the one who experiences and
QBism also emphasizes the role of action. Agents use their beliefs to guide their actions in the