Bell inequalities

[professor rat]

" . . .game-like tests of competing theories of nature are something of a tradition in quantum mechanics. They date back to the Northern Irish physicist John Bell who, in the 1960s, used a similar approach to prove that quantum mechanics itself is truly necessary for an accurate description of nature. . .  ."

https://aeon.co/essays/how-imaginary-numbers-describe-the-fundamental-shape-of-nature

Reposts etc