 Friederich (2011, 2015) favors what he calls a therapeutic approach to interpreting quantum theory, taking his cue from the later philosophy of Ludwig Wittgenstein. This approach grounds the objectivity of quantum state assignments in the implicit constitutive rules governing this practice. Those rules determine the state an agent has to assign depending on her knowledge of the values of observables, perhaps obtained by consulting the outcome of their measurement on the system. Friederich agrees with Healey that differently situated agents may therefore have to assign different states to the same system in the same circumstances insofar as their situations permit some to consult outcomes inaccessible to others, and makes the point by saying a system is not \(in\) whichever quantum state it is assigned.