In recent years, much research has been devoted to exploring contextuality in systems that are not strictly quantum, like classical light, and many theory-independent frameworks for contextuality analysis have been developed. It has raised the debate on the meaning of contextuality outside the quantum realm, and also on whether—and, if so, when—it can be regarded as a signature of non-classicality. In this paper, we try to contribute to this debate by showing a very simple “thought experiment” or “toy mechanism” where a classical object (i.e., an object obeying the laws of classical physics) is used to generate experimental data violating the KCBS inequality. As with most thought experiments, the idea is to simplify the discussion and to shed light on issues that in real experiments, or from a purely theoretical perspective, may be cumbersome. We give special attention to the distinction between classical realism and classicality, and to the contrast between contextuality within and beyond quantum theory.

近年来，许多研究致力于探索非严格量子系统（例如经典光）中的关联性，并且已经开发了许多独立于理论的关联性分析框架。它引发了关于量子领域之外的语境性含义的争论，以及是否——如果是的话，何时——它可以被视为非经典性的标志的争论。在本文中，我们试图通过展示一个非常简单的“思想实验”或“玩具机制”来为这场辩论做出贡献，其中使用经典对象（即遵守经典物理定律的对象）来生成违反 KCBS 的实验数据不等式。与大多数思想实验一样，其想法是简化讨论并阐明在实际实验中或从纯理论角度来看可能很麻烦的问题。我们特别关注经典实在论和经典性之间的区别，以及量子理论内外的语境之间的对比。