  where, as before, |up&gt;AL and |down&gt;AL denote the states of the L-apparatus displaying the outcomes z-spin ‘up’ and ‘down’ respectively, and |ready&gt;AR denotes the state of the R-apparatus being ready to measure z-spin. In this state, a gigantic number of particles of the L-apparatus pointer are entangled together in the superposition state of being in the position (corresponding to pointing to) ‘up’ and the position (corresponding to pointing to) ‘down.’ For assuming, for simplicity of presentation, that the position of all particles of the L-apparatus pointer in the state of pointing to ‘up’ (‘down’) is the same, the state |ψ6&gt; can be rewritten as: