  The rocks and shoals of modal interpretations are beyond the scope of this article (see the entry on  modal interpretations).  We just note that it is by no means clear how these interpretations can manage to always pick out the right set of observables assumed to have values. ‘Right set’  here minimally means that observables we perceive as having values  (i.e. those corresponding to the measurement apparatus’s pointer position)  must always be included and must always reproduce the QM statistics. We also mention two important results which cast doubt on the feasibility of modal interpretations: First, it can be shown that either partial value definiteness collapses into total value definiteness (i.e., VD) or classical reasoning about physical properties must be abandoned (Clifton 1995). Second, it is possible to derive KS theorems even in certain modal interpretations (Bacciagaluppi 1995, Clifton 1996).