About a "contextuality loophole" in Bell's theorem claimed to exist by Nieuwenhuizen

TL;DR

This paper refutes Nieuwenhuizen's claim of a 'contextuality loophole' in Bell's theorem, clarifying that non-contextuality is derived from Einstein causality rather than assumed.

Contribution

The paper clarifies the logical foundations of Bell's theorem, demonstrating that the supposed loophole is unjustified and based on a misunderstanding.

Findings

Bell's theorem does not presuppose non-contextuality

Non-contextuality is derived from Einstein causality in Bell's theorem

The claimed 'contextuality loophole' is invalid

Abstract

Nieuwenhuizen argued that there exists some "contextuality loophole" in Bell's theorem. This claim is unjustified. In Bell's theorem non-contextuality is not presupposed but derived from Einstein causality using the EPR argument.