Contextuality, Nonlocality and Counterfactual Arguments

TL;DR

This paper demonstrates that any deterministic theory equivalent to quantum mechanics must be contextual, and critically examines the use of counterfactual arguments in analyzing nonlocal phenomena.

Contribution

It provides a novel perspective linking determinism, contextuality, and counterfactual reasoning in quantum theory.

Findings

Deterministic theories equivalent to quantum mechanics are inherently contextual.

The paper offers a critical analysis of counterfactual arguments in nonlocal physics.

It clarifies the relationship between nonlocality and contextuality in quantum theories.

Abstract

In this paper, following an elementary line of thought which somewhat differs from the usual one, we prove once more that any deterministic theory predictively equivalent to quantum mechanics unavoidably exhibits a contextual character. The purpose of adopting this perspective is that of paving the way for a critical analysis of the use of counterfactual arguments when dealing with nonlocal physical processes.