  The aim of this note is to attract attention of experimenters to the original
Bell (OB) inequality which was shadowed by the common consideration of the CHSH
inequality. There are two reasons to test the OB inequality and not the CHSH
inequality. First of all, the OB inequality is a straightforward consequence to
the EPR-argumentation. And only this inequality is related to the EPR-Bohr
debate. However, the last statement can be objected by some experts working in
quantum foundations. Therefore to convince experimenters to perform the
OB-violation experiment, we prefer to concentrate on the second distinguishing
feature of the OB inequality which was emphasized by I. Pitowsky. He pointed
out that the OB inequality provides a higher degree of violations of
classicality than the CHSH inequality. The main problem is that the OB
inequality is derived under the assumption of perfect (anti-) correlations.
However, the last years were characterized by the amazing development of
quantum technologies. Nowadays, there exist sources producing with very high
probability the pairs of photons in the singlet state. Moreover, the efficiency
of photon detectors was improved tremendously. In any event one can start by
proceeding with the fair sampling assumption. Another possibility is to use the
scheme of Hensen et al. experiment for entangled electrons.
