in the copenhagen view of this experiment, alice's measurement—and particularly her measurement choice—has a direct effect on bob's state. however, under the assumption of locality, actions on alice's system do not affect the "true", or "ontic" state of bob's system. we see that the ontic state of bob's system must be compatible with one of the quantum states formula_7 or formula_8, since alice can make a measurement that concludes with one of those states being the quantum description of his system. at the same time, it must also be compatible with one of the quantum states formula_9 or formula_10 for the same reason. therefore, the ontic state of bob's system must be compatible with at least two quantum states; the quantum state is therefore not a complete descriptor of his system. einstein, podolsky and rosen saw this as evidence of the incompleteness of the copenhagen interpretation of quantum theory, since the wavefunction is explicitly not a complete description of a quantum system under this assumption of locality. their paper concludes: