The phenomenon of defeasibility has long been a central theme in legal literature. This essay aims to shed new light on that phenomenon by clarifying some fundamental conceptual issues. First, the most widespread definition of legal defeasibility is examined and criticized. The essay shows that such a definition is poorly constructed, inaccurate and generates many problems. Indeed, the definition hides the close relationship between legal defeasibility and legal interpretation. Second, this essay argues that no new definition is needed. I will show that from an interpretative standpoint, there is nothing special about legal defeasibility. Contrary to what some authors maintain, no unique or privileged source of legal defeasibility exists, nor are there privileged arguments to justify it. Specifically, legal defeasibility refers to interpretative outcomes deriving from interpretative arguments that, on the one hand, are very different from one another, and, on the other, are often employed to justify different interpretative outcomes. In the legal field, the problems related to defeasibility have little in common with the problems that this label covers in other areas—such as logic or epistemology—and they are nothing but the well-known problems related to legal interpretation. In conclusion, this paper argues that as far as legal argumentation is concerned, the notion of legal defeasibility lacks explanatory power, and it should be abandoned.

中文翻译：

---

可废止性、法律和论证：解释性观点的批判性观点

可废止现象长期以来一直是法律文献的中心主题。本文旨在通过澄清一些基本的概念问题来阐明这一现象。首先，审查和批评了最广泛的法律可废止性定义。这篇文章表明，这样的定义构建不当、不准确并且会产生许多问题。事实上，该定义隐藏了法律可废止性和法律解释之间的密切关系。其次，本文认为不需要新的定义。我将表明，从解释的角度来看，法律可废止性没有什么特别之处。与某些作者所主张的相反，不存在法律可废止性的独特或特权来源，也没有特权论据来证明其合理性。具体来说，法律可废止性是指源自解释性论点的解释性结果，这些论点一方面彼此非常不同，另一方面经常被用来证明不同的解释性结果。在法律领域，可废止性问题与该标签所涵盖的其他领域的问题——例如逻辑学或认识论——几乎没有共同之处，它们只不过是与法律解释相关的众所周知的问题。总之，本文认为，就法律论证而言，法律可废止性的概念缺乏解释力，应予摒弃。在法律领域，可废止性问题与该标签所涵盖的其他领域的问题——如逻辑学或认识论——几乎没有共同之处，它们只不过是与法律解释相关的众所周知的问题。总之，本文认为，就法律论证而言，法律可废止性的概念缺乏解释力，应予摒弃。在法律领域，可废止性问题与该标签所涵盖的其他领域的问题——如逻辑学或认识论——几乎没有共同之处，它们只不过是与法律解释相关的众所周知的问题。总之，本文认为，就法律论证而言，法律可废止性的概念缺乏解释力，应予摒弃。