  We show that the extensions of quantum correlations stemming from a "strict"
interpretation of the criterion of reality of Einstein, Podolsky and Rosen
raise the inadequacy of their ideal experiment for the assignment of
simultaneous elements of reality to two incompatible properties. Then, we
suggest a different physical situation enabling the simultaneous assignment of
objective values of two incompatible observables of a spin particle by means of
measurements of two compatible properties of a second correlated spin particle.
