Reality and Spooky Action at a Distance
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Quantum mechanics has a peculiar feature that Einstein called “Spooky action at a distance”, and which he found problematic. The problem arises under certain realizable empirical conditions involving two different experiments performed at essentially the same time in two far-apart experimental regions. Under the specified empirical conditions, the computational rules of quantum mechanics assert that the psycho-physical event initiated by the “free choice” of experiment made in one experimental region instantly changes the quantum state that controls the quantum predictions about outcomes appearing in the faraway region.