Extended simple regions have been the focus of recent developments in philosophical logic, metaphysics, and philosophy of physics. However, only a handful of works provides a rigorous characterization of an extended simple region. In particular, a recent paper in this journal defends a definition based on an extrinsic notion of least distance. Call it the Least Distance proposal. This paper provides the first assessment of it. It argues that Least Distance faces difficulties and drawbacks. The paper then goes on to suggest a different proposal, the Diameter proposal that is able to handle such drawbacks and difficulties.

中文翻译：

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区域、延伸、距离、直径

扩展的简单区域一直是哲学逻辑、形而上学和物理哲学最近发展的焦点。然而，只有少数作品提供了扩展简单区域的严格特征。特别是，该杂志最近的一篇论文捍卫了基于最小距离的外在概念的定义。称之为最短距离提案。本文对其进行了首次评估。它认为最小距离面临着困难和缺点。然后论文继续提出了一个不同的提案，即能够解决这些缺点和困难的直径提案。