  Furthermore, the dynamics of the properties that the L-particle (R-particle) has as a separated system and the dynamics of its properties as a subsystem of the particle pair are generally  different.[25]  Consider, again, the state |ψ10&gt;. In the (earlier) z-spin measurement on the L-particle, the spin properties that the L-particle has as a separated system follow a deterministic evolution — the L-particle has either z-spin ‘up’ or z-spin ‘down’ before and after the L-measurement; whereas as a subsystem of the particle pair, the spin properties of the L-particle follow an indeterministic evolution — the L-particle has no definite spin properties before the L-measurement and either z-spin ‘up’ (with approximately chance ½) or z-spin ‘down’ (with approximately chance ½) after the L-measurement.