  Another way to try to explain the failure of property composition is to interpret the properties of composite systems as holistic, non-decomposable properties. On this interpretation, the z-spin ‘up’ property that the L-particle has as a subsystem of the particle pair in the state |ψ9&gt; is completely different from the z-spin ‘up’ property that the L-particle has as a separated system, and the use of the term ‘z-spin up’ in both cases is misleading (for more details, see Berkovitz and Hemmo   2006a).[27]