 Seen properly, contextuality amounts to little more than the rather unremarkable observation that results of experiments should depend upon how they are performed, even when the experiments are associated with the same operator in the manner alluded to  above.  David Albert (1992: 153) has given a particularly simple and striking example of this dependence for Stern-Gerlach experiments “measuring” the \(z\)-component of spin. Reversing the polarity in a magnet for “measuring” the \(z\)-component of spin while keeping the same geometry yields another magnet for “measuring” the \(z\)-component of spin. The use of one or the other of these two magnets will often lead to opposite conclusions about the “value of the \(z\)-component of spin” prior to the “measurement” (for the same initial value of the position of the particle).