 Suppose, as in EPR, that the interaction between the two systems links position and also linear momentum, and that the systems are far apart. As before, we can measure either the position or the momentum of Albert’s system and, in either case, we can infer (respectively) a position or a momentum for Niels’ system. It follows from the reduction of the total state function that, depending on whether we measure the position or the momentum of Albert’s system, Niels’ system will be left (respectively) either in a position eigenstate or in a momentum eigenstate. Suppose too that separability holds, so that Niels’ system has some real physical state of affairs. If locality holds as well, then the measurement of Albert’s system does not disturb the assumed “reality” for Niels’ system. However, that reality appears to be represented by quite different state functions, depending on which measurement of Albert’s system one chooses to carry out. If we understand a “complete description” to rule out that one and the same physical state can be described by state functions with distinct physical implications, then we can conclude that the quantum mechanical description is incomplete. Here again we confront a dilemma between separability-locality and completeness. Many years later Einstein put it this way (Schilpp 1949, p. 682);