"No physical theory of local hidden variables can ever reproduce all of the predictions of quantum mechanics." - Physicist John S. Bell
In the Lorentz Contraction 2 thread, grav (I think it was grav) proposed Bell's Spaceship Paradox, which generated much discussion along Lorentzian/contractual lines.
Bell was famous for many things other than exploring the reality of length contractions as v --> c. One of his principle focuses involves "hidden variables" involved in quantum mechanics. He challenged several "impossibility proofs" against hidden variables, and throughout his life he "remained interested in objective 'observer-free' quantum mechanics," where emphasis should be placed on what is, rather than what's observed.
Although an experiement in 1972 appeared to violate Bell's Inequality, many believe that future, more precise experiements will reveal that one of the known loopholes had been biasing the interpretations.
Question: How does the EPR paradox figure in with Bell's Inequality?