Indeterminacy and Legal Reasoning

W artykule analizowane jest zagadnienie wiarygodności decyzji intuicyjnych w procesie stosowania prawa. Analizy prowadzone są z perspektywy psychologii poznawczej, ze szczególnym uwzględnieniem prac nad intuicją ekspercką. Celem prowadzonych analiz jest odpowiedź na pytanie, czy można mówić o wiarygodnych prawniczych decyzjach intuicyjnych. Zestawione zostają badania amerykańskich realistów prawniczych i psychologów poznawczych w celu ich konfrotancji i ustalenia warunków wpływających na proces podejmowania decyzji i wydawania ocen intuicyjnych. Artykuł kończy się przedstawieniem modelu podejmowania decyzji intuicyjnych w naukach psychologicznych i naukach prawnych. -/- (...) In the paper the issue of credibility of legal intuitive decisions is discussed. Analysis is conducted form a perspective of cognitive psychology, especially with emphasis on works on expertise intuition. The goal of the paper is to answer a question whether can we speak about credible intuitive decision making in legal sciences. We confront research conducted in legal theory and cognitive psychology in order to set conditions relevant for a decision making process. The paper ends with a presentation of a decision making model that can be found both in legal sciences and in cognitive psychology. (shrink)

The topic of exemplarity has attracted considerable interest in philosophy, legal theory, literary studies and art recently. There is broad consensus that exemplary cases mediate between singular instances and general concepts or norms. The aim of this article is to provide an additional perspective on the logic of exemplarity. First, inspired by Jacques Derrida’s discussion of exemplarity, I shall argue that there is a kind of différance between (singular) examples and (general) exemplars. What an example exemplifies, the exemplarity of the (...) example, eludes any fixed identity and follows a logic of supplement. Second, I shall present the so-called logic of exemplarity. The received paraconsistent view has it that the exemplar of X is an X and, at the same time, is not an X. Inspired by Ludwig Wittgenstein’s discussion of the standard metre, I would like to present an alternative paracomplete view whereby we can say of an exemplar of X neither that it is an X nor that it is not an X. (shrink)

The use of AI algorithms in criminal trials has been the subject of very lively ethical and legal debates recently. While there are concerns over the lack of accuracy and the harmful biases that certain algorithms display, new algorithms seem more promising and might lead to more accurate legal decisions. Algorithms seem especially relevant for bail decisions, because such decisions involve statistical data to which human reasoners struggle to give adequate weight. While getting the right legal outcome is a strong (...) desideratum of criminal trials, advocates of the relational theory of procedural justice give us good reason to think that fairness and perceived fairness of legal procedures have a value that is independent from the outcome. According to this literature, one key aspect of fairness is trustworthiness. In this paper, I argue that using certain algorithms to assist bail decisions could increase three diferent aspects of judges’ trustworthiness: (1) actual trustworthiness, (2) rich trustworthiness, and (3) perceived trustworthiness. (shrink)

Reasoning by default is a relevant aspect of everyday life that has traditionally attracted the attention of many fields of research, from psychology to the philosophy of logic, from economics to artificial intelligence. Also in the field of law, default reasoning is widely used by lawyers, judges and other legal decision-makers. In this paper, a philosopher of language (Carlo Penco) and a philosopher of law (Damiano Canale) attempt to explore some uses of default reasoning that are scarcely considered by legal (...) theory. In particular, the dialogue dwells on the notion of literal meaning, witness testimony, and the problem of disagreement among experts in legal proceedings. The paper is intended as a sort of brain storming useful to identify new lines of research straddling philosophy of law, cognitive psychology and philosophy of language. (shrink)

That the law should guide those who are subject to it is both requirement and rationale of the law. Yet many legal norms are indeterminate and, therefore, incapable of guiding the conduct of their subjects. This note seeks to answer part of the conceptual puzzle implied by the use of such legal norms: does their indeterminacy serve some positive function? I proceed by way of literature review to identify seven functions of legal indeterminacy that scholars have identified but note that (...) their use is not thereby made necessarily justifiable. (shrink)

The American Legal Realists offered several hypotheses about alternative drivers of official decision-making (i.e., considerations other than the rules on the books). This article identifies a tension between two of those hypotheses: the ‘extra-legal’ factors and ‘working’ rules. This tension gets exacerbated in Frederick Schauer’s account of Legal Realism, one which places his Dislocated Determinacy thesis—about working rules constituting an additional ground for the existence of ‘easy’ cases and determinacy across a legal system—into doubt.

Several scholars advance the ‘LR-LP thesis’: the claim that American Legal Realism presupposes Legal Positivism. Brian Leiter and Frederick Schauer, prominent scholars of Realism, delimit that thesis to a Razian version of Exclusive Legal Positivism (‘ELP’). This article nevertheless argues that Leiter and Schauer’s respective accounts of Legal Realism are difficult to square with Razian ELP. Indeed, the Realist hypotheses about alternative drivers of official decision, concerning ‘working’ rules, ‘real’ rules, and ‘situation-types’, if correct, actually threaten Razian ELP. -/- Problems (...) arise for the LR-LP thesis (as delimited to Razian ELP) irrespective of whether those three Realist alternative drivers are classified as legal or non-legal norms. If they are non-legal, merits-based norms, then (a) those alternative drivers do much more work within official decision than ELP suggests is the case for those sorts of norms, and (b), Inclusive Legal Positivism may better, and might even be required, to explain them. Alternatively, if those Realist alternative drivers are better understood as source-based legal norms, then they cannot fulfil (or even be claimed by the law to fulfil) certain core functions that ELP attributes to legal norms. (shrink)

The late antique rabbis of Roman Palestine were seasoned jurists, experts on exegesis and legal interpretation. Yet rabbinic literature does not theorize. A positive account of rabbinic conceptions of language therefore remains a desideratum. I choose an alternative approach. Legal reasoning relies on language to ground the determinacy of the law. Jurists must thus confront language when it threatens to undermine the latter. Conversely, they may hold language to safeguard legal determinacy. Drawing on insights from legal theory, I turn to (...) an unusual rabbinic rule of inference. Its earliest attested version suggests a universal possibility of inference “from the category of yes that of no, from the category of no that of yes.” I show that the ever-evolving uses of this rule allow us to observe a shift in linguistic attitude, increasingly acknowledging linguistic uncertainty. My findings tie in with recent advances in the study of rabbinic exegesis. (shrink)

Traditional analyses characterise or identify vagueness and ambiguity as the sole or primary sources of legal indeterminacy. In this article, I identify and characterise various other sources of legal indeterminacy. In addition to the semantic indeterminacy of vagueness and ambiguity, philosophers of language have identified conversational, pragmatic, and contextual indeterminacy, each of which is capable of generating a ‘hard case’ as applied to the legal sphere. Nor is all legal indeterminacy linguistic in nature. Following Henry Prakken, I identify non-monotonicity, or (...) the fact that legal inferences are defeasible, as a final source of legal indeterminacy. Each source of legal indeterminacy thus identified includes case-law examples to aid in the discussion. (shrink)

Judges decide cases by appeal to rules of general application they deem to be law. If a candidate rule resolves the case and is, ex ante and independently of the judge’s judgment, the law, then the judge has a legal obligation to declare it as such and follow it. That, at any rate, is conventional wisdom. Yet the principle is false – a rule’s being law or the judge’s believing it to be law is neither necessary nor even sufficient for (...) a judge being legally obliged to follow it. The principle’s falsity is especially apparent in so-called hard cases, where the line between legal and non-legal rules is obscure. Moreover, judges have authority to disregard law in hard cases not because moral obligations trump legal obligations. Rather, the law itself circumscribes its own authority. The implications for legal philosophy are significant; for one, a theory of juridical norms can be developed independently of the precise boundaries of legality. (shrink)

An annotated bibliography of legal epistemology.

In this book I examine various forms of indeterminacy in the law and scrutinize (i.a. by way of game theoretical models) the conditions under which they can be strategically used. In particular, I analyze the advantages and disadvantages of indeterminacy in the wording of laws, contracts, and verdicts. Legal texts are particularly interesting insofar as they address a heterogeneous audience, are applied in a variety of unforeseeable circumstances and must, at the same time, lay down clear and unambiguous standards. I (...) argue for the claim that semantic vagueness is less relevant than commonly supposed in the debate, while other forms of indeterminacy (in particular, polysemy and standard-relativity) are underrated or altogether ignored. This misconception is, as I argue, due to a systematic confusion between semantic vagueness and these forms of indeterminacy. Once it is resolved, the value of indeterminacy can be clearly shown. (shrink)

This article juxtaposes a jurisprudential thesis and a practical problem in an attempt to gain critical insight into both. The jurisprudential thesis is Dworkin’s rights thesis. The practical problem revolves around judicial resort to the floodgates argument in civil adjudication (or, more specifically, a version of this argument focused on adjudicative resources, which is dubbed here the FA). The analysis yields three principal observations: (1) Judicial resort to the FA is discordant with the rights thesis. (2) The rights thesis is (...) instructive in one way but mistaken in another. While Dworkin has highlighted some valid and sound reasons against judicial policymaking, his conclusive exclusion of judicial policymaking from civil law adjudication is erroneous. Civil law adjudication, it is argued, is an arena of ineliminable tension between principle and policy. (3) The FA is a type of policy argument particularly vulnerable to objections against judicial policymaking. There should, therefore, be a (rebuttable) presumption against judicial resort to it. (shrink)

We explain three phenomena in legal discourse in terms of MacFarlane’s assessment-sensitive semantics: incompatible applications of law, assessments of statements about what is legally the case, and retrospective overruling. The claim is that assessment sensitivity fits in with the view, shared by many legal theorists at least with respect to hard cases, that the final adjudicator’s interpretation of legal sources is constitutive of the applied norm. We argue that there are strong analogies between certain kinds of statements in legal discourse (...) as understood in light of that view and discourse about matters of taste and future contingents. Thus, if assessment-sensitive semantics provides a compelling account of discourse about matters of taste and future contingents, then it likewise provides a compelling account of those statements in legal discourse. (shrink)

Recension de la traduction française de l'ouvrage de F. Schauer, Penser en Juriste, Dalloz, 2018.

It causes many difficulties for jurisprudence to define the notion of judicial activism. At the very beginning it had rather a journalistic character, but but over time it has become a serious charge against these judges who act on the basis of their vision of what the law ought to be like rather than what it actually is like. On the ground of the polish legal theory the echoes of the dispute about judicial activism are reflected in the discussions about (...) the nature of legal interpretation. Transposing the problem of activism into the problem of interpretation allows the use of analysis tools that were previously unavailable. One of these tools are concepts emerged on the neopragmatist philosophy of Stanley Fish. Fish tries to describe the nature of the interpretation in the context of reader-response criticism and the concept of interpretive communities. Application of Fish's philosophy in the field of legal theory provides constructive conclusions about the concepts of judicial activism and judicial law-making. (shrink)

„O pełnej znajomości prawa można mówić tylko wówczas, gdy zna się prawo i wytworzone przez praktykę reguły posługiwania się nim” – pisał swego czasu Marek Zirk-Sadowski. Pogląd ten wiąże się z niezwykle istotnym sporem o kryterium poprawności dokonywanej przez sędziów wykładni prawa. Zlokalizowanie takiego kryterium wydaje się być szczególnie ważne choćby ze względu na zawartą w naszym systemie prawnym konieczność realizowania zasady trójpodziału władzy, zgodnie z którą w procesie stosowania prawa nie może dochodzić do tzw. kryptoprawotwórstwa. Celem niniejszego tekstu jest (...) zaprezentowanie wybranych koncepcji poprawności wykładni prawa oraz ich krytyka w świetle neopragmatyzmu Stanley'a Fisha, filozofa prawa oraz profesora literaturoznawstwa, którego głównym przedmiotem refleksji był problem interpretacji. Filozofia amerykańskiego neopragmatysty opiera się na dwóch koncepcjach: reader-response criticism i wspólnotach interpretacyjnych. Reader-response criticism polega na skupieniu się na afektywnym aspekcie procesu interpretacji, uznając czytelnika za kluczową instancję tego procesu; koncepcja wspólnot interpretacyjnych z kolei ma wytłumaczyć, dlaczego podmiot interpretuje w taki a nie inny sposób. Zaproponowana przez Fisha metoda pozwala uznać, że de facto jedynym możliwym kryterium poprawności wykładni są inne decyzje sędziowskie. W świetle powyższych uwag wydaje się zasadnym stwierdzenie, że podejście Fisha umożliwia pogłębienie refleksji na temat jednej z kluczowych kwestii zarówno dla praktyki jak i teorii prawniczej, tj. poprawności wykładni prawa. (shrink)

This paper argues that several sorts of metaphysical and semantic indeterminacy afflict the causal relation. If, as it is plausible to hold, there is a relationship between causation and moral responsibility, then indeterminacy in the causal relation results in indeterminacy of moral responsibility more generally.

Vague expressions are omnipresent in natural language. As such, their use in legal texts is virtually inevitable. If a law contains vague terms, the question whether it applies to a particular case often lacks a clear answer. One of the fundamental pillars of the rule of law is legal certainty. The determinacy of the law enables people to use it as a guide and places judges in the position to decide impartially. Vagueness poses a threat to these ideals. In borderline (...) cases, the law seems to be indeterminate and thus incapable of serving its core rule of law value. -/- In the philosophy of language, vagueness has become one of the hottest topics of the last two decades. Linguists and philosophers have investigated what distinguishes "soritical " vagueness from other kinds of linguistic indeterminacy, such as ambiguity, generality, open texture, and family resemblance concepts. There is a vast literature that discusses the logical, semantic, pragmatic, and epistemic aspects of these phenomena. Legal theory has hitherto paid little attention to the differences between the various kinds of linguistic indeterminacy that are grouped under the heading of "vagueness ", let alone to the various theories that try to account for these phenomena. -/- The paper is an introduction to a book of the same title. Bringing together leading scholars working on the topic of vagueness in philosophy and in law, the book fosters a dialogue between philosophers and legal scholars by examining how philosophers conceive legal ambiguity from their theoretical perspective and how legal theorists make use of philosophical theories of vagueness. (shrink)

Vague expressions are omnipresent in natural language. Their use in legal texts is inevitable. A law phrased in vague terms will often leave it indeterminate whether it applies to a particular case. This places the law at odds with legal values. One of the fundamental pillars of the rule of law is legal certainty. The determinacy of the law enables people to use it as a guide and allows judges make impartial decisions. Vagueness poses a threat to these ideals. In (...) borderline cases, the law seems to be indeterminate and thus incapable of serving its core rule of law value. -/- In the philosophy of language, vagueness has become one of the hottest topics of the past two decades. Linguists and philosophers have investigated what distinguishes ‘soritical’ vagueness from other kinds of linguistic indeterminacy, such as ambiguity, generality, open texture, and family resemblance concepts. There is a vast literature that discusses the logical, semantic, pragmatic, and epistemic aspects of these phenomena. Legal theory has hitherto paid little attention to the differences between the various kinds of linguistic indeterminacy that are grouped under the heading of ‘vagueness’, let alone to the various theories that try to account for these phenomena. -/- Bringing together leading scholars working on the topic of vagueness in philosophy and in law, this book fosters a dialogue between philosophers and legal scholars by examining how philosophers conceive legal ambiguity from their theoretical perspective and how legal theorists make use of philosophical theories of vagueness. -/- The chapters of the book are organized into three parts. The first part addresses the import of different theories of vagueness for the law, referring to a wide range of theories from supervaluationist to contextualist and semantic realist accounts in order to address the question of whether the law can learn from engaging with philosophical discussions of vagueness. The second part of the book examines different vagueness phenomena. The contributions suggest that paying greater attention to these phenomena can make lawyers aware of specific issues and solutions as yet overlooked. The third part deals with the pragmatic aspects of vagueness in law and with the professional, political, and moral issues to which such vagueness gives rise. (shrink)

The paper discusses the notion of defeasibility and focuses specifically on defeasible norms. First, it delineates a robust notion of the phenomenon of defeasibility, which poses a serious problem for both moral and legal theory. It does this by laying out the conditions and desiderata that a model of defeasibility should be able to meet. It further focuses on a specific model of defeasibility that utilises the notion of normal conditions to expound the robust notion of defeasibility. It argues that (...) this model fails in its attempt to do this, particularly since it presupposes further pertinent norms and we have reasons to doubt if these are defeasible. It thus does not allow defeasibility to go “all the way down” in the normative domain and limits it merely to a feature of some sort of mid-level norm. In conclusion, it draws lessons from this and positions defeasibility models within a more general pluralistic approach to norms. (shrink)

Članek se ukvarja s pojmom uklonljivosti, s posebnim ozirom na uklonljivost moralnih in pravnih norm. Na začetku začrtamo grob oris pojava uklonljivosti, ki je zahteven izziv tako za moralno kot tudi za pravno teorijo. Opozorimo na pogoje in primerjalne prednosti, ki naj bi jih izpolnjeval oz. imel model uklonljivosti. Nadalje se v članku osredotočimo na svojstven model uklonljivosti, ki uporablja pojem normalnih pogojev da bi zajel omenjeni pojem uklonljivosti norm. Trdimo, da temu modelu pri tem spodleti, posebej z vidika predpostavke (...) nadaljnjih pomembnih norm, za katere imamo upravičene razloge za dvom, da so prav tako uklonljive. Tako ta model ne dopušča, da bi uklonljivost segala do samih temeljev zadevnega normativnega področja in omeji značilnost uklonljivosti na norme na srednji ravni. V zaključku poudarimo nekaj naukov te razprave in jih umestimo v širše polje pluralističnega pristopa k normam. (shrink)

This paper challenges the Critical Legal Studies (CLS) claims of legal indeterminacy. It shall use a legal formalist logic and language as its main assertion, further maintaining that the CLS claims is only grounded in ambiguity and confusion. CLS is a legal theory that challenges and overturns accepted norms and standards in legal theory and practice. They maintained that law in the historical and contemporary society has an alleged impartiality, and it is used as a tool of privilege and power (...) – law is politics. Consequently, CLS maintained that these results to indeterminacy of law. Legal indeterminacy can be summed up as contrary to the common understanding that legal materials, statutes and case law, do not really answer legal disputes. Legal principles and doctrines, as CLS scholars claim, are said to be indeterminate, for it is riddle with gaps, conflicts, and anomalies that are widely present even in simple cases. Legal indeterminacy also rises because of the underlying political power – law is politics – that implicates law as merely a tool for oppression. This thesis shows that CLS assertions with legal indeterminacy is only grounded on ambiguity. On one hand, using the main concept of legal formalist logic and language grounded with sub-arguments: inherent generality of legal language, reasoned elaboration, and neutral principles, it refutes the CLS claims of legal indeterminacy. On the other, the paper maintains that their main reason of legal indeterminacy, ‘law is politics’, is merely a statement of fact that currently happens in society is sentimental and weak through counterexamples. (shrink)

Both the traditional Aristotelian and modern symbolic approaches to logic have seen logic in terms of discrete symbol processing. Yet there are several kinds of argument whose validity depends on some topological notion of continuous variation, which is not well captured by discrete symbols. Examples include extrapolation and slippery slope arguments, sorites, fuzzy logic, and those involving closeness of possible worlds. It is argued that the natural first attempts to analyze these notions and explain their relation to reasoning fail, so (...) that ignorance of their nature is profound. (shrink)

This volume puts leading pragmatists in the philosophy of language, including Robert Brandom, in contact with scholars concerned with what pragmatism has come to mean for the law. Each contribution uses the resources of pragmatism to tackle fundamental problems in the philosophy of language, the philosophy of law, and social and political philosophy. In many chapters, the version of pragmatism deployed proves a fruitful approach to its subject matter; in others, shortcomings of the specific brand of pragmatism are revealed. The (...) result is a clearer understanding of what pragmatism has meant and can mean across these tightly related philosophical areas. The book, then, is itself pragmatism in action: it seeks to clarify its unifying concept by examining the practices that centrally involve it. (shrink)

When the United States Supreme Court used the expression “with all deliberate speed” in the case Brown v. Board of Education, it did so presumably because of its vagueness. Many jurists, economists, linguists, and philosophers accordingly assume that vagueness can be strategically used to one’s advantage. Roy Sorensen has cast doubt on this assumption by strictly differentiating between vagueness and generality. Indeed, most arguments for the value of vagueness go through only when vagueness is confused with generality. Sorensen claims that (...) vagueness – correctly understood – has no function in law inter alia because judges lie systematically when confronted with borderline cases. I argue that both claims are wrong. First, judges do not need to resort to lying when adjudicating borderline cases, and even if they had to, this would not render vagueness useless. Secondly, vagueness has several important functions in law such as the reduction of decision costs and the delegation of power. Although many functions commonly attributed to the vagueness of legal expressions are in fact due to their generality or other semantic properties, vagueness has at least these two functions in law. (shrink)

Fifty years of effort in artificial intelligence (AI) and the formalization of legal reasoning have produced both successes and failures. Considerable success in organizing and displaying evidence and its interrelationships has been accompanied by failure to achieve the original ambition of AI as applied to law: fully automated legal decision-making. The obstacles to formalizing legal reasoning have proved to be the same ones that make the formalization of commonsense reasoning so difficult, and are most evident where legal reasoning has to (...) meld with the vast web of ordinary human knowledge of the world. Underlying many of the problems is the mismatch between the discreteness of symbol manipulation and the continuous nature of imprecise natural language, of degrees of similarity and analogy, and of probabilities. (shrink)

After a section of Methodological Preliminaries, I consider Truth and Argumentation in the Jewish Legal Tradition, under the following subheadings: Truth in Judaism, Truth and Norms, Truth and Language, Truth and Logic, Truth and Argumentation. I thus use an external framework in order to pose questions to the Jewish legal tradition, and identify internal resources which may provide partial answers to these questions. But are these partial answers so peculiar, theological, culturally contingent as to lack any value in terms of (...) a potential contribution to these same issues as posed within Western jurisprudence? This may be doubted, given the West’s adoption or construction of the divine right of kings on the one hand and of holistic theories of interpretation on the other, derived from the Bible and later Jewish tradition, mediated and fortified through a Christianised Rome. (shrink)

Consumer disputes and their nature are changing very fast every day. E-commerce is promoted by the all relevant stakeholders such as European Commission, consumers associations, competent institutions, and business sector in order to achieve the main present goal—consumer confidence in business and full functioning of the internal EU market. Here the third parties are important—trade partners from all over the word. There is no legal relation or actions between disputes and searching for the most convenient, fast, cheap and comfortable. Because (...) of that, this article sets out general views on online transactions and consumer protection in the context of e-commerce and possible online dispute resolution means. The authors of this article are chiefly concerned about legal uncertainty and the jurisdiction as well as applicable law in business-to-consumer (B2C) e-commerce. Online dispute resolution or in other words it is called the ODR is seen as a possibility to solve these barriers in dispute resolution using technology to facilitate the resolution of disputes between parties primarily involving negotiation, mediation or arbitration, or a combination of all three. In this respect it is often seen as being the online equivalent of alternative dispute resolution. However, ODR can also augment these traditional means of resolving disputes by applying innovative techniques and online technologies to the process. (shrink)

This paper is a preliminary investigation into the application of the formal-logical theory of normative positions to the characterisation of normative-informational positions, pertaining to rules that are meant to regulate the supply of information. First, we present the proposed framework. Next, we identify the kinds of nuances and distinctions that can be articulated in such a logical framework. Finally, we show how such nuances can arise in specific regulations. Reference is made to Data Protection Law and Contract Law, among others. (...) The proposed approach is articulated around two essential steps. The first involves identifying the set of possible interpretations that can be given to a particular norm. This is done by using formal methods. The second involves picking out one of these interpretations as the most likely one. This second step can be resolved only by using further information (e.g., the context or other parts of the regulation). (shrink)

In English law, there are various ways in which contracts can be invalid or unenforceable because they are immoral — and yet English lawyers know that many contracts are conclusively binding. The first two sources of legal gaps that Joseph Raz identifies do not seem surprising. Vagueness in the sources of law leads to gaps in borderline cases, and there is a gap if the law includes inconsistent rules, with no way of deciding which is effective. In those situations it (...) seems right to say that the law does not tell people where they stand, so that people may need a court to make a decision. But if Raz is right about the third source of gaps, then judges have discretion whenever the law appeals to moral considerations. This chapter discusses the sources thesis, moral considerations, judicial discretion, the social morality of judges, and contract law. (shrink)

To move beyond vague platitudes about the importance of context in legal reasoning or natural language understanding, one must take account of ideas from artificial intelligence on how to represent context formally. Work on topics like prior probabilities, the theory-ladenness of observation, encyclopedic knowledge for disambiguation in language translation and pathology test diagnosis has produced a body of knowledge on how to represent context in artificial intelligence applications.

This paper deals with the problems involved in the concept of knowledge in the sphere of law. Traditionally, the idea of knowledge has dealt with the presumption of given objects of information. According to this approach, knowing means finding these objects. This is the natural and understandable foundation of metaphysical or philosophical realism. Cognition and cognitive interest are directed outside the sentences by which they are described. This is the point of departure of legal positivism as well. However, it is (...) not possible to see valid law as totally independent of language and concepts. This makes the idea of legal facts as institutional facts vague. From a practical viewpoint, the sentences of judges and legal scholars, when they present valid law, justify rather than describe. Their crucial function is interpretation. Hence, the objectivity of these sentences cannot be based on the presumption of separate objects either. Instead, it has to be based on the principles of acceptable reasoning. Moreover, the author claims that this kind of approach, united with the utilization of human rights and substantial legal principles, leads one to acknowledge objective values. (shrink)

This paper analyses the logical structure of the balancing of conflicting normative arguments, and asks whether non-monotonic logic is adequate to represent this type of legal or practical reasoning. Norm conflicts are often regarded as a field of application for non-monotonic logics. This paper argues, however, that the balancing of normative arguments consists of an act of judgement, not a logical inference, and that models of deductive as well as of defeasible reasoning do not give an adequate account of its (...) structure. Moreover, it argues that as far as the argumentation consists in logical inferences, deductive logic suffices for reconstructing the argumentation from the internal point of view of someone making normative judgements. (shrink)

"My argument is as follows. In the first section, I sketch briefly the ways in which intentionalism might provide a solution to the problem of vagueness. The second section describes the different areas in which counterfactuals must be invoked by intentionalism. In the third section I point out that on a classic analysis of counterfactuals - that of David Lewis and Robert Stalnaker - the truth conditions of counterfactuals depend on relations of similarity among possible worlds. Since similarity is vague, (...) so are counterfactuals. Finally, I show that there is no unique solution to the problem of vagueness for the specific types of counterfactuals required by intentionalists - those referring to authors' or legislators' mental states, and those attempting to transport historical authors into the present. Although some counterfactuals are relatively 'insensitive' - in Lewis's sense -- those required in intentionalist interpretation are at least moderately sensitive. This means taht different contexts will resolve the vagueness in different ways. The choice among contexts must be made by the interpreter and is not determined by author's intentions. Hence the vagueness due to counterfactual reasoning about author's intention leads to indeterminacies that cannot be resolved by intentionalism itself. Intentionalism is a solution neither to the problem of vagueness nor to the problem of indeterminacy." Distinguishes between strict intentionalism and moderate intentionalism. Both are often seen as a means for reducing vagueness in legal language. However, counterfactual intentions are needed to resolve certain problems. First, in combining actual intentions, e.g. in a legislature, where different combinations may result in different legislation. Second, it is needed to resolve conflicts between intentions, particularly between different levels of abstraction. Third, reducing vagueness, which will be necessary even with enactment intentions. Fourth, there may be no determinate intention that would even, in principle, resolve a borderline case - e.g. when intentions are conflated. [For discussion of application and enactment intentions, see Goldsworthy, "Originalism in Constitutional Interpretation," Federal Law Review 25: 1.] Lastly, counterfactuals may be necessary to distinguish between application and enactment intentions. Lewis on counterfactuals: "For Lewis and Stalnaker, the key idea in the explication of truth conditions of counterfactuals is that of 'comparative overall similarity' of possible worlds. A counterfactual is true if and only if in the closest, most similar world to the actual in which the antecedent of the conditional is true, the consequent of the conditional is also true." Thus, there may be a determinate relevant world for some cases - i.e. there may be a counterfactual that determines the answer to a counterfactual question. This, however, will not always be the case. For example, counterfactuals concerning Caesar being the leader of N. Korea. Here, for Lewis, where there are ties of closeness of counterfactuals, all tied CFs will be false. When considering counterfactual intentions for the sake of interpretation, some may be determinate or insensitive. Normally, however, this will not be the case. "For intentionalism to resolve the matter of whether the regulation prohibiting vehicles prohibits toy cars as well, one of these counterfactuals must be true and the other false. Imagine a possible world in which the oncsideration of the borderline case is added to the authors' mental states. It is likely that connected belief will be affected as well. For example consideration of the aim of the regulation will occur as a consequence of the consideration of whether the regulation applies to the borderline case: Is ensuring peace and quiet in the park overriding, or are there exceptions to accommodate children's games? When there are changes in a constellation of men tal states, we will have to imagine a situation in whichh the legislators' beleifs are very different from what they in fact were. This creates at least a profound epistemological problem, because, as Dworkin puts it: "[it] has the effect of sharply reducing the amount of historical evidence that is relevant to answering the counterfactual." More important, however, in some worlds in which the legislators consider the case of a child's toy car, they will treat the peace and quiet purpose as overriding, whereas in others they will treat the children's play purpose as overriding. This means that different worlds will resolve the truth-value of the counterfactuals differently." "If I am right that counterfactual reasoning is ubiquitous in intentionalism, intentionalism suffers from an extra dimension of vagueness and is therefore at a disadvantage when measured against theories that do not rely on counterfactuals.". (shrink)

_The Case of the Speluncean Explorers, _written in 1949 by Lon Fuller, is the most famous fictitious legal case of all time. Describing a case of trapped travellers who are forcd to cannibalize one of their team, it is used on courses in philosophy of law and Jurisprudence to show how their trial upon rescue touches on key concepts in philosophy and legal theory such as utilitarianism and naturalism. _The Case of the Speluncean Explorers: Nine New opinions_ includes a reprint (...) of Fuller's classic article and a much-needed revision of and addition to the five openings originally expressed in the case by the five Supreme Court Judges. Peter Suber carefully and clearly introduces students to the main themes of Fuller's article before introducing nine new opinions. These opinions include perspectives from communitarian, feminist, multicultural, postmodern and economic theories of law, updating Fuller's original case and bringing contemporary theories of law to bear on the five original opinions. Why read this book? One reason is to get beyond sloganeering about "judicial activism" and "activist judges". The book is an enjoyable and even-handed way to understand what the debate is about. It doesn't tell you what to think, but illustrates the contending positions and lets you think for yourself. It will show you how judges with different moral and political beliefs interpret written law, how they use precedents, how they conceive the proper role of judges, how they conceive the relationship between law and morality, and how they defend their judicial practices against criticism. It anchors all of this in a Supreme Court hearing of a gripping, concrete case on which real people disagree. The book uses no jargon and assumes no prior knowledge of law or legal philosophy. (shrink)

We present a computational model of dialectical argumentation that could serve as a basis for legal reasoning. The legal domain is an instance of a domain in which knowledge is incomplete, uncertain, and inconsistent. Argumentation is well suited for reasoning in such weak theory domains. We model argument both as information structure, i.e., argument units connecting claims with supporting data, and as dialectical process, i.e., an alternating series of moves by opposing sides. Our model includes burden of proof as a (...) key element, indicating what level of support must be achieved by one side to win the argument. Burden of proof acts as move filter, turntaking mechanism, and termination criterion, eventually determining the winner of an argument. Our model has been implemented in a computer program. We demonstrate the model by considering program output for two examples previously discussed in the artificial intelligence and legal reasoning literature. (shrink)

This paper considers certain aspects of Aarnio’s theory of legal reasoning. Criticism is limited to the notion of legal certainty and to the related notions of the justification and reasonable acceptability of interpretative standpoints.

A representation methodology for knowledge allowing multiple interpretations is described. It is based on the following conception of legal knowledge and its open texture. Since indeterminate, legal knowledge must be adapted to fit the circumstances of the cases to which it is applied. Whether a certain adaptation is lawful or not is measured by metaknowledge. But as this too is indeterminate, its adaptation to the case must be measured by metametaknowledge, etc. This hierarchical model of law is quite well-established and (...) may serve well as a basis for a legal knowledge system. To account for the indeterminacy of law such a system should support the construction of different arguments for and against various interpretations of legal sources. However, automatizing this reasoning fully is unsound since it would imply a restriction to arguments defending interpretations anticipated at programming time. Therefore, the system must be interactive and the user''s knowledge be furnished in a principled way. Contrary to the widespread opinion that classical logic is inadequate for representing open-textured knowledge, the framework outlined herein is given a formalization in first order logic. (shrink)

To say that the law is indeterminate is to say that the class of legal reasons is indeterminate. The Class, in turn, consists of four components: 1. Legitimate sources of law ; 2. Legitimate interpretive operations that can be performed on the sources in order to generate rules of law ; 3. Legitimate interpretive operations that can be performed on the facts of record in order to generate facts of legal significance ; and 4. Legitimate rational operations that can be (...) performed on facts and rules of law to finally yield particular decisions. (shrink)

Much work on legal knowledge systems treats legal reasoning as arguments that lead from a description of the law and the facts of a case, to the legal conclusion for the case. The reasoning steps of the inference engine parallel the logical steps by means of which the legal conclusion is derived from the factual and legal premises. In short, the relation between the input and the output of a legal inference engine is a logical one. The truth of the (...) conclusion only depends on the premises, and is independent of the argument that leads to the conclusion.This paper opposes the logical approach, and defends a procedural approach to legal reasoning. Legal conclusions are not true or false independent of the reasoning process that ended in these conclusions. In critical cases this reasoning process consists of an adversarial procedure in which several parties are involved. The course of the argument determines whether the conclusion is true or false. The phenomenon of hard cases is used to demonstrate this essential procedural nature of legal reasoning. (shrink)

Although Positivism and Natural Law theories seem to be mutually exclusive theories regarding the law, one might be able to salvage the attractive features of both theories by confining each theory to a different area of judicial life. The most promising line of demarcation is to confine Positivism to theories of validity, and to confine Natural Law to theories of adjudication. This strategy has been very ably outlined in a paper by David Brink, which I shall use as the springboard (...) for this essay. I argue that Brink's attempt fails and that any attempt to reconcile Positivism and Natural Law by dividing Theory of Adjudication and Theory of Validity in unlikely to succeed because Positivism has an adequate accoun tof both validity and adjudication. (shrink)

Minimally helpful comparison of constructive interpretation with Gadamer, Derrida, and Habermas. Presents a somewhat imprecise account of Dworkin, a quite general discussion of his similarities with Gadamer, and a gloss of Derridean deconstruction with regards to the Declaration of Independence. Then offers an evaluation of Dworkin in terms of Gadamer and Derrida.