  Katherine Brading and Alexander Skyles (2012) consider the plausibility of arguing for structural realism on the basis of this underdetermination. Saunders argues that there is no underdetermination (see (5) below).  The appeal to this metaphysical underdetermination is criticised by Chakravartty 2003, who argues that it cannot be significant since it also obtains in the case of everyday objects. Morganti (2004) argues in favour of transcendental individuation, and also points out that if quantum mechanics is not complete and there are hidden variables as in Bohm theory, the quantum particles may be individuated by their intrinsic and spatio-temporal properties after all.