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We examine the entanglement and state disturbance arising in a protectivemeasurement and argue that these inescapable effects doom the claim thatprotective measurement establishes the reality of the wave function. Anadditional challenge to this claim results from the exponential number ofprotective measurements required to reconstruct multi-qubit states. We suggestthat the failure of protective measurement to settle the question of themeaning of the wave function is entirely expected, for protective measurementis but an application of the standard quantum formalism, and none of the hardfoundational questions can ever be settled in this way.

Entanglement, scaling, and the meaning of the wave function in protective measurement