Abstract
The author discusses a question related to a certain aspect of justification of legal decisions, often so-called internal justification-a legal decision is internally justified if and only if it can be deduced from the norm(s) applicable to the case, and from the statement(s) describing the facts of the case. According to this notion, infinite irrelevant logical consequences are justified. To avoid this counterintuitive conclusion, the author analyzes three notions of relevance: Sperber-Wilson's notion, Anderson-Belnap's notion, and Schurz's notion. The author presents a reconstruction of the notion of relevance very close to Schurz's notion, extended to make it suitable to the particular characteristics of deontic logic. Finally, this notion of relevance is used to discuss some aspects of the concept of normative system, conceived as a deductive system, that is, a system containing all its logical consequences.
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References
Aarnio, Aulis: 1986, ‘On Changes in the Systematics of Law’, in T. Eckhoff, L. M. Friedman, J. Uusitalo (eds.), Vernunft und Erfahrung im Rechtsdenken der Gegenwart. Rechtstheorie. 10, Duncker & Humbolt, Berlin, pp. 161–70.
Aarnio, Aulis: 1987, The Rational as Reasonable. A Treatise on Legal Justification, D. Reidel, Dordrecht.
Alchourrón, Carlos: 1961, ‘Los argumentos jurídicos a fortiori y a pari’, in Revista jurídica de Buenos Aires 4, 177–199.
Alexy, Robert: 1978, Theorie der juristischen Argumentatipn, Surkamp, Frankfurt a.M.
Alchourrón, Carlos and Eugenio, Bulygin: 1971, Normative Systems, Springer Verlag, New York, Wien.
Alchourrón, Carlos and Eugenio, Bulygin: 1981, ‘The Expressive Conception of Norms’, in R. Hilpinen (ed.), New Studies in Deontic Logic, D. Reidel, Dordrecht, pp. 95–121.
Alchourrón, Carlos and Eugenio, Bulygin: 1992, ‘Limits of Logic and Legal Reasoning’, in A. Martino (ed.), Expert Systems in Law, Nort-Holland Elsevier Science Publishers B.V., Amsterdam, pp. 9–23.
Alchourrón, C., P. Gärdenfords, and D. Makinson: 1985, ‘On the Logic of Theory of Change: Partial Meet Contraction and Revision Functions’, The Journal of Symbolic Logic 50, 510–30.
Anderson, Alan Ross and Nuel D. Belnap: 1975, Entailment. The Logic of Relevance and Necessity, Princenton University Press, Princenton (New Jersey).
Atienza, Manuel: 1990, ‘For a Theory of Legal Argumentation’, in Rechtstheorie 21, 393–414.
Atienza, Manuel: 1991, Las razones del Derecho, Centro de Estudios Constitucionales, Madrid.
Føllesdal, Dagfinn and Risto, Hilpinen: 1971, ‘Deontic Logic: An Introduction’, in R. Hilpinen (ed.), Deontic Logic: Introductory and Systematic Readings, D. Reidel, Dordrecht, pp. 1–35.
Frege, Gottlob: 1879, Begriffschrift,. Nebert, Jena (English translation by S. Bauer-Mengelber in J. van Heijenoort (ed.), From Frege to Gödel, Harvard University Press, Cambridge, Mass., 1967).
Gentzen, Gerhard: 1934, ‘Untersuchungen über das Logische Schliessen’, Mathematische Zeitschrift 39, 176–210/410–31 (English translation ‘Investigation into Logical Deduction’, in M. E. Sazbo (ed.), The Collected Papers of Gerhard Gentzen, North-Holland Publishing Company, Amsterdam, 1969, pp. 68–131).
Grice, H. P.: 1975, ‘Logic and Conversation’, in P. Cole and J. Morgan (eds.), Syntax and Semantics 3: Speech Acts, Academic Press, New York, pp. 41–58.
Haack, Susan: 1978, Philosophy of Logics, Cambridge University Press, Cambridge.
Hart, H. L. A.: 1961, The Concept of Law, Oxford University Press, Oxford.
Hunter, Geoffrey: 1993, ‘The Meaning of ‘If’ in Conditional Propositions’, in The Philosophical Quarterly 43, 279–297.
Kelsen, Hans: 1945, General Theory of Law and State, Harvard University Press, Cambridge, Mass.
Lewis, C. I.: 1912, ‘Implication and the Algebra of Logic’, in Mind 21, 522–531.
Lewis, C. I.: 1914, ‘The Calculus of Strict Implication’, in Mind 23, 240–247.
Lewis, C. I.: 1918, A Survey of Symbolic Logic, University of California, Berkeley.
Lyons, David: 1991, ‘Derivability, Defensibility, and the Justification of Judicial Decisions’, in Moral Aspects of Legal Theory, Cambridge, Cambridge University Press, pp. 119–140.
MacCormick, Neil: 1978, Legal Reasoning and Legal Theory, Oxford University Press, Oxford.
MacCormick, Neil: 1994, ‘Foreword’, in Legal Reasoning and Legal Theory, Oxford University Press, Oxford, pp. ix-xvii.
Moore, G. E.: 1921, ‘External and Internal Relations’, in Philosophical Studies, Routledge & Kegan Paul, London, pp. 276–309.
Moreso, J. J., P. E. Navarro, and M. C. Redondo: 1992, ‘Argumentación jurídica, lógica y decisión judicial’, in Doxa 11, 247–262.
Moreso, J. J. and P. E. Navarro: 1993, ‘Some Remarks on the Notions of Legal Order and Legal System’, in Ratio Iuris 6, 48–63.
Niiniluoto, Ilkka: 1981, ‘On Truth and Argumentation in Legal Dogmatics’, in A. Aarnio, I. Niiniluoto, J. Uusitalo (eds.), Methodologie und Erkenntnistheorie der juristischen Argumentation. Rechtstheorie 2, Duncker & Humbolt, Berlin, pp. 53–76.
Orayen, Raúl: 1989, ‘La lógica relevante contra la deducibilidad clásica’, in Lógica, significado y ontología, UNAM, Mexico D.F., pp. 219–263.
Peczenick, Aleksander: 1989, On Law and Reason, Kluwer Academic Publishers, Dordrecht.
Quine, Willard Van Orman: 1970, Philosophy of Logic, Prentice Hall Englewood Cliffs, New Jersey.
Raz, Joseph: 1994, ‘Authority, Law, and Morality’, in Ethics in the Public Domain, Oxford: Oxford University Press, pp. 194–221.
Ross, Alf: 1941, ‘Imperatives and Logic’, in Theoria 7, 53–71.
Russell, Bertrand, and A. N. Whitehead: 1910, Principia Mathematica, Cambridge University Press, Cambridge.
Sanford, David H.: 1989, If P, then Q, Conditionals and the Foundations of Reasoning, Routledge, London & New York.
Schurz, Gerhard: 1991, ‘Relevant Deduction. From Solving Paradoxes Towards a General Theory’, in Erkenntnis 35, 391–437.
Schurz, Gerhard and Lambert, Karel: ‘Outline of a Theory of Scientific Understanding’, in Synthese 101, 65–120.
Sperber, Dan and Deirdre Wilson: 1986a, Relevance: Communication and Cognition, Basil Blackwell, Oxford.
Sperber, Dan and Deirdre Wilson: 1986b, ‘On Defining Relevance’, in R. E. Grandy and R. Warner (eds.), Philosophical Grounds of Rationality, Oxford University Press, Oxford, pp. 243–258.
Suppes, Patrick: 1957, Introduction to Logic, Van Nostrand, New York.
Wright, Georg Henrik von: 1951, ‘Deontic Logic’ in Mind 60, 1–15.
Wright, Georg Henrik von: 1957, ‘The Concept of Entailment’, in Logical Studies, Routledge & Kegan Paul, London, pp. 165–191.
Wright, Georg Henrik von: 1980, ‘Problems and Prospects of Deontic Logic. A Survey’, in E. Agazzi (ed.): Modern Logic. A Survey D. Reidel, Dordrecht, pp. 399–423.
Wright, Georg Henrik von: 1983, ‘Norms, Truth and Logic’, in Practical Reason. Philosophical Papers. Vol I., Basil Blackwell, Oxford, pp. 130–209.
Wright, Georg Henrik von: 1991, ‘Is There a Logic of Norms’, in Ratio Iuris 4, 265–283.
Wroblewski, Jerzy: 1971, ‘Legal Decision and its Justification’, in H. Hubien (ed.), Le raisonnementjuridique. Akten des Weltkongressfür Rechts-und Sozialphilosophie, Brussels, pp. 409–419.
Wroblewski, Jerzy: 1974, ‘Legal Syllogism and Rationality of Judicial Decision’, in Rechtstheorie 5, 33–46.
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I am indebted to C. Alchourrón, E. Bulygin, R. Caracciolo, R. Hernández Marín, P. Navarro, J. Raz, C. Redondo and two referees of this journal for helpful comments and suggestions.
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Moreso, J.J. On relevance and justification of legal decisions. Erkenntnis 44, 73–100 (1996). https://doi.org/10.1007/BF00172854
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DOI: https://doi.org/10.1007/BF00172854