Hardy's paradox was originally presented as a demonstration, without inequalities, of the incompatibility between quantum mechanics and the hypothesis of local causality. Equipped with newly developed tools that allow for a quantitative assessment of realism, here we revisit Hardy's paradox and argue that non-local causality is not mandatory for its solution; quantum irrealism suffices.
@article{arxiv.1910.00450,
title = {Hardy's paradox as a demonstration of quantum irrealism},
author = {N. G. Engelbert and R. M. Angelo},
journal= {arXiv preprint arXiv:1910.00450},
year = {2020}
}