  In 1976, I met John Bell several times in CERN and we talked about a possible
violation of optical theorem, purity tests, EPR paradox, Bell inequalities and
their violation. I review our discussions, and explain how they were related to
my earlier research. I also reproduce handwritten notes, which I gave to Bell
during our first meeting and a handwritten letter he sent to me in 1982. We
have never met again, but I have continued to discuss BI-CHSH inequalities and
their violation in several papers. The research stimulated by Bell papers and
experiments performed to check his inequalities led to several important
applications of quantum entanglement in quantum information and quantum
technologies. Unfortunately, it led also to extraordinary metaphysical claims
and speculations about quantum nonlocality and retro-causality, which in our
opinion John Bell would not endorse today. BI-CHSH inequalities are violated in
physics and in cognitive science, but it neither proved the completeness of
quantum mechanics nor its nonlocality. Quantum computing advantage is not due
to some magical instantaneous influences between distant physical systems.
Therefore one has to be cautious in drawing far-reaching philosophical
conclusions from Bell inequalities.
