COUNTERFACTUAL INTERPRETATION OF THE QUANTUM MEASUREMENT PROCESS

The question of the determination of the state of the system during a measurement experiment is discussed within quantum theory, as a part o f the more general measurement's problem. I propose a counterfactual i nterpretation of the measurement process which answers the question fr om a conceptual point of view. This interpretation turns out to be con sistent with the predictions of quantum theory, but it presents diffic ulties from an operational point of view.