 Regarding the legitimacy of attributing properties to physical systems, one could say that quantum mechanics warns us against attributing too many properties to physical systems. However—with Einstein—one can adopt a sufficient condition for the existence of an objective individual property the possibility to predict with certainty the outcome of a measurement. This implies that, whenever the overall statevector factorizes into the state of the Hilbert space of the physical system \(S\) times the state for the rest of the universe, \(S\) does possess some properties (actually a complete set of properties, i.e., those associated to appropriate maximal sets of commuting observables).