Clearly, if we take quantum mechanics seriously as making a statement about the real world, then the demands it places on our conventional thinking are enormous. Hidden behind the discrete and independent objects of the sense world is an entangled realm, in which the simple notions of identity and locality no longer apply. We may not notice the intimate relationships common to that level of existence, but, regardless of our blindness to them, they persist. Events that appear to us as random may, in fact, be correlated with other events occurring elsewhere. Behind the indifference of the macroscopic world, “passion at a distance” knits everything together.
Greenstein and Zajonc, "The Quantum Challenge" (1940)