  If an interpreter wanted to defend causal contextuality, this would entail abandoning FM, at least for observables of the type f(Q) (non-maximal observables): Since their values causally depend on the presence of certain measurement arrangements, these arrangements are causally necessary for the values to come about, thus the values cannot be present before the system-apparatus interaction, and FM is violated.  As an advantage of causal contextualism the following might be pointed out. It does not imply that the ontological status of the physical properties involved must change, i.e. does not imply that they become relational. If the property in an object is brought about via interaction with another one, it can still be one which the object has for itself after the interaction. However, the idea of causal contextuality is sometimes discussed critically, since there is reason to think that it may be empirically inadequate (see Shimony 1984, Stairs 1992).