This paper examines the concept of coherence and its role in legal reasoning. First, it identifies some problem areas confronting coherence theories of legal reasoning about both disputed questions of fact and disputed questions of law. Second, with a view to solving these problems, it proposes a coherence model of legal reasoning. The main tenet of this coherence model is that a belief about the law and the facts under dispute is justified if it is “optimally coherent,” that is, if (...) it is such that an epistemically responsible legal decision-maker would have accepted it as justified by virtue of its coherence in like circumstances. Last, looking beyond the coherence theory, the paper explores the implications of the version of legal coherentism proposed for a general theory of legal reasoning and rationality. (shrink)

The author analyzes the relations between truth and law starting from the distinction between practical and theoretical spheres. He shows, first, how moral and legal statements and reasoning are connected with an operation of weighing and balancing different values and principles and how this operation is ultimately based on personal and intuitive preferences and feeling. The criteria developed by the theoretical sciences to define truth (coherence, consensus and pragmatic success) can only be translated into practical statements as criteria of correctness (...) because we cannot affirm that a norm or value statement is true or false. The three criteria become interrelated indices of correctness: They are criteria for rational discourse. (shrink)

In this paper we will analyse the issue of defeasibility in the law, taking into account research carried out in philosophy, artificial intelligence and legal theory. We will adopt a very general idea of legal defeasibility, in which we will include all different ways in which certain legal conclusions may need to be abandoned, though no mistake was made in deriving them. We will argue that defeasibility in the law involves three different aspects, which we will call inference‐based defeasibility, process‐based (...) defeasibility, and theory‐based defeasibility. Only the integration of these three perspectives allows us to provide a satisfactory account of the role of defeasibility in legal reasoning. (shrink)

The main stream of legal theory tends to incorporate unwritten principles into the law. Weighing of principles plays a great role in legal argumentation, inter alia in statutory interpretation. A weighing and balancing of principles and other prima facie reasons is a jump. The inference is not conclusive.To deal with defeasibility and weighing, a jurist needs both the belief-revision logic and the nonmonotonic logic. The systems of nonmonotonic logic included in the present volume provide logical tools enabling one to speak (...) precisely about various kinds of rules about rules, dealing with such things as applicability of rules, what is assumed by rules, priority between rules and the burden of proof. Nonmonotonic logic is an example of an extension of the domain of logic. But the more far-reaching the extension is, the greater problems it meets. It seems impossible to make logical reconstruction of the totality of legal argumentation. (shrink)

The author adopts a coherentist approach to legal argumentation.Ceteris paribus, the degree of coherence of argumentation depends on answers to such questions as: How many statements belonging to the justification are supported by reasons, that is, not arbitrary?, How profound is the justification, that is, how long are the chains of reasons it contains?, How closely interconnected are the reasons, for example in such a way that the same conclusion follows from various independent reasons?, How relevant are the reasons in (...) the context in question?, etc.A reasonable legal argumentation is a special case of a reasonable moral argumentation. Both contain moral substantive reasons and legal authority reasons. On the other hand, some particularities of legal argumentation must be noticed, as well. Among other things, the lawyers take for granted that legal reasoning is based on valid law and that some sources of law, such as statutes, are binding.There exist various juristic roles and corresponding types of argumentation, e.g., judicial and doctrinal ones. Yet, all kinds of legal argumentation must use weighing and balancing in order to make the law coherent and morally acceptable. Consequently, all general principles and criteria of coherence are applicable to all these types but their weight varies between them. (shrink)

Reasoning with cases has been a primary focus of those working in AI and law who have attempted to model legal reasoning. In this paper we put forward a formal model of reasoning with cases which captures many of the insights from that previous work. We begin by stating our view of reasoning with cases as a process of constructing, evaluating and applying a theory. Central to our model is a view of the relationship between cases, rules based on cases, (...) and the social values which justify those rules. Having given our view of these relationships, we present our formal model of them, and explain how theories can be constructed, compared and evaluated. We then show how previous work can be described in terms of our model, and discuss extensions to the basic model to accommodate particular features of previous work. We conclude by identifying some directions for future work. (shrink)

According to the author there is no doubt that one has to distinguish between the justification and the application of norms. Problems are seen only to arise if one asks what exactly the distinction is and which consequences have to be drawn from it. Recently, Klaus Günther, in particular, has searched for this distinction and connected it with far‐reaching conclusions concerning the theory of norms, arguments, and morals. His theses are the object of the author's considerations.

This paper proposes to model legal reasoning asdialectical theory-constructiondirected by teleology. Precedents are viewed asevidence to be explained throughtheories. So, given a background of factors andvalues, the parties in a case canbuild their theories by using a set of operators,which are called theory constructors.The objective of each party is to provide theoriesthat both explain the evidence (theprecedents) and support the decision wished by thatparty. This leads to theory-basedargumentation, i.e., a dialectical exchange ofcompeting theories, which support opposedoutcomes by explaining the same (...) evidence and appealingto the same values. The winneris the party that can reply with a more coherent theoryto all theories of its adversary. (shrink)

This paper deals with the questions of whether the law should be coherent and what this coherence would amount to. In this connection so‐called “integrated coherentism” is introduced. According to integrated coherentism, an acceptance set is coherent if and only if it contains everything that should rationally be accepted according to what else one accepts and does not contain anything that should rationally be rejected according to what else one accepts. Such an acceptance set is ideally a theory of everything, (...) including amongst others standards for rational aceptance. On the assumption that the law, as a social phenomenon, is what the best theory about the law says it is, the law must be coherent, because the best theory of the law is part of an integratedly coherent theory of everything. This view is compatible with Raz's view that the law stems from different sources that need not be coherent in the sense that they consistently elaborate the same underlying principles or policies. Raz's view is not a consequence of integrated coherentism, however. (shrink)

Legal dogmatics in Continental European law (scientia iuris, Rechtswissenschaft) consists of professional legal writings whose task is to systematize and interpret valid law. Legal dogmatics pursues knowledge of the existing law, yet in many cases it leads to a change of the law. Among general theories of legal dogmatics, one may mention the theories of negligence, intent, adequate causation and ownership. The theories produce principles and they also produce defeasible rules. By means of production of general and defeasible theories, legal (...) dogmatics aims at obtaining a system of law that is both internally coherent and harmonized with its background in morality and (political) philosophy. Legal dogmatics is necessary in the context of constitutional constraints on the majority rule. Only if the courts act on the basis of Reason they can be a legitimate counterpart of the majority rule. And Reason cannot be exhausted by particular decision making. It also needs a more abstract deliberation, given by expert jurists. However, legal dogmatics has been a target of several kinds of criticism: empirical, morally-political, epistemological, logical, and ontological. The position taken in this article is to answer such criticism by mutually adjusting philosophy and the practices of the law. (shrink)

Moral and theoretical deficiencies of the main foundation strategies in social and political systems (Social Engineering, Foundationalism and Invisible Hand theories) are explained by the necessity of a synthesis of different kinds of rationality, i.e., goal-rationality, norm-rationality and rightness and weighing rationality. The anthropological basis of the theory is a distinction between homo finalis and homo socialis. At the institutional level, this conception leads to a synthesis of the rule of law and the welfare state. At the political level, this (...) implies a retonsideration of the principles of democracy and political planning. (shrink)

Human dignity defines the foundation of mutual respect between persons in the law. In German constitutional law it defends a realm of individual freedom and inviolable protection against the interests of the collective. Dignity as a legal concept is not a good to be balanced or weighed against other goods, but a prohibition norm, not a reason but a constraint, thus guaranteeing a non-consequentialist and especially a non-utilitarian understanding of basic rights.

This essay discusses the developments and trends of research in legalargumentation of the last 25 years. The essay starts with a survey of thevarious approaches which can be distinguished: the logical approach, therhetorical approach, and the dialogical approach. Then it identifies varioustopics in the research, which constitute the various components of aresearch programme of legal argumentation: the philosophical component, thetheoretical component, the reconstruction component, the empiricalcomponent, and the practical component. It concludes with a discussion ofthe main trends in the research (...) of the last 25 years. (shrink)

In this paper the argument from coherence is submitted to a critical analysis. First, it is argued to be a complex form of coordinative argumentation, structured on various argumentative levels. Then, using the pragma-dialectical theory of argumentation a distinction is brought out between two basic forms of the argument from coherence: in one use this argument occurs as a sequence of two symptomatic arguments; in the other use we have a main symptomatic argument supported by a subordinate pragmatic argument. Finally, (...) from an evaluative point of view it is assessed whether the argument from coherence can be found acceptable as a tool for settling disputes. It is claimed that in general, we can welcome this argumentative structure as sound and fully acceptable provided that we are aware of the interpretative discretion its use implies. (shrink)

The aim of this essay is to develop a coherence theory for the justification of evidentiary judgments in law. The main claim of the coherence theory proposed in this article is that a belief about the events being litigated is justified if and only if it is a belief that an epistemically responsible fact finder might hold by virtue of its coherence in like circumstances. The article argues that this coherentist approach to evidence and legal proof has the resources to (...) meet some of the main objections that may be addressed against attempts to analyze the justification of evidentiary judgments in law in coherentist terms. It concludes by exploring some implications of the proposed version of legal coherentism for a jurisprudence of evidence. (shrink)