Legal normativity and contestability

Project management: Prof. Dr. Marcus Willaschek

It is a special characteristic of law that the reasoning of legal judgments is not conclusive. This is demonstrated by the fact that in law there is always the possibility of refuting or challenging the application of a legal rule R by means of a reasoned exception to R. The exceptions to legal rules cannot be enumerated. The exceptions to legal rules cannot be enumerated.

The core objective of the project was to deepen our understanding of legal normativity by analyzing the contestability of legal justifications. In particular, the question of the relationship between contestability and indeterminacy was to be analyzed. Does the non-enumerability of exceptions also imply a normative indeterminacy of the situation?

The project was a contribution to the investigation of the normativity of normative orders and in particular to the sub-question of whether normative orders are subject to an incessant process of revision.

The project was carried out as part of the dissertation by project member Michel de Araujo Kurth and with the close support of PIs Marcus Willaschek and Klaus Günther. The basis was the previously compiled bibliography on the topic of contestability. Interim results were presented and critically discussed every six months at the research colloquium held by Prof. Dr. Marcus Willaschek. At a conference in March 2015, some of the project’s sub-questions were examined by renowned legal philosophers and moral philosophers. An essay by the project team member presenting the results of the project and an essay by Günther will also be published in an anthology accompanying the conference.

Based on an analysis of legal contestability, two levels of justification of judgments could be distinguished: a “rule level” and a “substantial justification level”. By analyzing the relationship between these two levels, it was possible to develop a novel approach to answering the question of the relationship between indeterminacy and contestability. According to this approach, contestability and legal indeterminacy are mutually exclusive, since contestability implies a stronger weighting of a judgment on the substantial justification level compared to the rule level and thus implies normative determinacy.

The most important publications of the research project:

Willaschek, Marcus (2013): Defeasibility in Philosophy, Knowledge, Agency, Responsibility, and the Law, special issue of Grazer Philosophische Studien, ed. by: C. Blöser/M. Janvid/H.O. Matthiessen/M. Willaschek, Amsterdam/New York: Rodopi, 2013.

Willaschek, Marcus/C. Blöser/M. Janvid/H. Matthiessen: “Introduction”, in: C. Blöser/M. Janvid/H.O. Matthiessen/M. Willaschek (eds.): Defeasibility in Philosophy. Graz Philosophical Studies , 87, 2013, S. 1-8.

Willaschek, Marcus: “Strawsonian Epistemology. What Epistemologists can learn from ‘Freedom and Resentment'”, in: Defeasibility in Philosophy. Graz Philosophical Studies 87, C. Blöser/M. Janvid/H.O. Matthiessen/M. Willaschek (eds.), 2013, pp. 99-128.

Willaschek, Marcus: “Morality without sanction? Notes on Julia Hermann and Mario Brandhorst”, in: E. Buddeberg/A. Vesper (eds.): Morality and sanction. A controversy about the authority of moral norms Frankfurt am Main: Campus, 2013.

de Auraujo Kurth, Michel: “Selected Thematic Bibliography of Work on Defeasibility in Philosophy and Related Disciplines”, in: Grazer Philosophische Studien 87, 2013, pp. 217-257.

The most important events in this project:

Workshop: Defeasibility in the Law (organized by Marcus Willaschek, Klaus Günther and Michel de Araujo Kurth, with presentations by: PD. Carsten Bäcker, Prof. Ruth Chang, Prof. Jonathan Dancy, Dr. Susanne Mantel, Prof. Josep Joan Moreso, Prof. Matthias Klatt, Prof. Andrei Marmor, Prof. Marcus Willaschek, Andreas Müller M. A., Michel de Araujo Kurth M. A.), Cluster of Excellence “The Formation of Normative Orders”, Goethe University Frankfurt am Main, March 12-13, 2015.

Panel: “Legal Indeterminacy in International law and Contemporary American Constitutional Law” at the Cluster Nachwuchskonferenz 2014 Praktiken der Kritik, Cluster of Excellence “Die Herausbildung normativer Ordnungen”, Goethe University, Frankfurt am Main, December 6, 2013.

people in this project:

Project management / contact person

Willaschek, Marcus, Prof. Dr.

Project staff

de Araujo Kurth, Michel

News from the research center

Event
18.04.2026 | Frankfurt am Main

Das Prinzip Donald Trump und die Verrohung der Welt

Panel Discussion, Lecture

Ein neuer Politikstil macht international Karriere. Er ist gekennzeichnet von Vulgarität, Verrohung und erklärter Rechtsfeindschaft. Machtinteressen werden nicht mehr juristisch bemäntelt. Stattdessen wird das angebliche Recht des Stärkeren zur Staatsdoktrin gemacht – innenpolitisch wie außenpolitisch. Treibende Kraft hinter dieser Verrohung der politischen Sitten ist ein US-Präsident, der nicht nur die amerikanische Gesellschaft und Kultur, sondern auch die globale Ordnung nach seinen Vorstellungen und Interessen umgestaltet. Die Römerberggespräche wollen diesen Politikstil verstehen.

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Event
29.04.2026 | Frankfurt am Main

Kulturindustrie heute?

Panel Discussion

Das Gespräch „Kulturindustrie heute?“ widmet sich der Aktualität und Tragfähigkeit eines zentralen Begriffs der Kritischen Theorie. Die Filmwissenschaftlerin Gertrud Koch diskutiert im Rahmen der Gesprächsreihe "Frankfurter Schule" mit dem Filmkritiker Bert Rebhandl die gegenwärtigen Formen kultureller Produktion und Verbreitung vor dem Hintergrund von Digitalisierung, Plattformen und globalen Medienmärkten.

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Event
20.03.2026 | Frankfurt am Main

40 Jahre Schengen-Raum

Colloquium

Der 1984 geschlossene Schengen-Vertrag schuf einen heute 29 Staaten umfassenden Raum ohne Binnengrenzen, doch Migration über die Außengrenzen führte zuletzt zur Wiedereinführung von Kontrollen, auch durch die Bundesregierung ab 8. Mai 2025. Das Walter Hallstein-Kolloquium diskutiert die rechtliche Zulässigkeit, wirtschaftliche Folgen insbesondere für Arbeitsmigration und Arbeitsmarkt sowie die Zukunft des Schengen-Raums.

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News
12.02.2026

Satanist politics and the decline of reason in liberal democracies

For the last time in the winter semester 2025/26, the Research Center hosted the lecture series "Am Scheidepunkt. On the crisis of democracy". At the end, philosopher Michael Rosen from Harvard University presented his concept of "satanic politics" as a variant of the political interpretation of the world.

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News
09.02.2026

On the topicality of the concept of violence based on Camus and Derrida

Prof. Dr. Christine Abbt from the University of St. Gallen gave a lecture on democracies and the concept of violence as part of the lecture series "At the crossroads? On the crisis of democracy", she gave a lecture on democracies and the concept of violence. Under the title "Defending democracies. On the topicality of the concept of violence in Camus and Derrida", the philosopher discussed forms of violence and revolt and categorized them with regard to a democratic setting.

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Publication
04.02.2026 | Journal article

New Perspectives on Trust in International Conflicts

Wille, Tobias; Simon, Hendrik; Daase, Christopher; Deitelhoff, Nicole; Wheeler, Nicholas J.; Holmes, Marcus; Rathbun, Brian C.; Acharya, Amitav; Mitzen, Jennifer (2026): „New Perspectives on Trust in International Conflicts“. In: International Studies Review 28 (1), viaf027.

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News
02.02.2026

States competing for people - David Owen on civil geopolitics

As part of the lecture series "At the Crossroads - The Future of Democracy", David Owen from the University of Southampton presented his concept of civil geopolitics.

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News
20.01.2026

Christine Hentschel on reorientation in catastrophic times

As part of the lecture series "At the crossroads? On the crisis of democracy", the sociologist spoke about living in and dealing with catastrophic times. Against the backdrop of the destruction of living conditions, wars, permanent crises and threats to democracy, Hentschel addressed the infiltration of the catastrophic into everyday social life and a changing activist and literary approach to the future.

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Publication
08.01.2026 | Journal article

Gender Differences in Financial Advice

Bucher-Koenen, Tabea; Hackethal, Andreas; Koenen, Johannes; Laudenbach, Christine (2025): „Gender Differences in Financial Advice“. In: American Economic Review, 115 (12), pp. 4218–4252.

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