Photo of Harald Wiltsche

Harald Wiltsche

Professor, Head of Division

I am a philosopher of science. My research focuses on how embodied, situated subjects acquire knowledge about the world through thought experiments, mathematical models, and scientific instruments.

Philosophy of Science, Epistemology, and Phenomenology

In my work as a philosopher of science, I employ a diverse array of methodologies drawn from both the analytic and continental traditions. I also enjoy occasional explorations into the history of science and strive to remain closely engaged with the realities of scientific practice.

My areas of specialization include general philosophy of science, philosophy of physics, epistemology, 19th- and 20th-century history of philosophy, and phenomenology. My current research focuses on conceptual change in the physical sciences, especially in the foundations of quantum mechanics. Questions concerning measurement, probability, and objectivity look different once one takes seriously the role of agency, the structure of experimental intervention, and the evidential fragility of modern theoretical work. This is reflected in contemporary reconstruction programmes, which derive the quantum formalism from informational or operational principles, and in practice-oriented approaches that examine how physicists actually model, idealise, and reason under conditions of sparse or indirect empirical support. Phenomenology enters here not as a rigid doctrine but as a set of analytic resources: it helps illuminate how scientific understanding is formed, how subjectivity and agency shape inquiry, and how conceptual frameworks evolve when physical theories press against the limits of ordinary categories.

While my methodological orientation is broadly phenomenological, I am not committed to any single meta-philosophical framework. Science is a multifaceted phenomenon, and its analysis requires equally diverse methods. What I consider essential, however, is the recognition that any serious understanding of science must be grounded in a careful exploration of the structures of human subjectivity and the dynamics of scientific practice.

International Experience / Research Projects

Before assuming my position as Professor of Philosophy of Science at Linköping University in 2019, I served as Assistant Professor in the Department of Philosophy at the University of Graz (2013–2019), Fulbright Visiting Scholar and Lecturer at Stanford University (2017), and Erwin Schrödinger Research Fellow in the Department of Philosophy at the University of Toronto (2010–2013). I earned my PhD from the University of Graz in 2008 and have been a recurring Visiting Scholar at the Institute for Advanced Study in Princeton (2020–2023).

In 2026, I will return to Stanford University as Visiting Professor, where I will teach and pursue work on the philosophical foundations of physics.

I am currently editing The Oxford Handbook of Phenomenology of Science, scheduled for publication in 2026.

Teaching

My teaching experience encompasses a wide variety of courses and topics, ranging from large introductory lectures with over 300 students to upper-level writing courses, undergraduate classes, and interdisciplinary research seminars. Most of my courses focus on philosophy of science, epistemology, and phenomenology, although I have also taught courses on applied ethics. From 2013 to 2019, I served as a permanent lecturer at the Center for History of Science at the University of Graz, Austria.

CV

CV, 2025 October (PDF)

Further information and can be found on my external webpage:

http://www.haraldwiltsche.com

Publications

Cover of publication 'Book cover.'
Philipp Berghofer, Harald Wiltsche (Editorship) (2024)
Cover of publication 'Book cover. Phenomenological Approaches to Physics.'
Harald Wiltsche, Philipp Berghofer (Editorship) (2020)

2025

Harald Wiltsche (2025) The challenge from expert experience: On the role of qualitative methods in phenomenology of science European Journal for Philosophy of Science, Vol. 15, Article 57 (Article in journal) Continue to DOI
Harald Wiltsche (2025) The coordination problem: A challenge for transcendental phenomenology of science The New Yearbook for Phenomenology and Phenomenological Philosophy, p. 257-277 (Chapter in book)
Arezoo Islami, Harald Wiltsche (2025) The French crisis: Rethinking the phenomenology of quantum mechanics Studies in history and philosophy of science, Vol. 112, p. 33-43 (Article in journal) Continue to DOI
Harald Wiltsche (2025) Elevating Phenomenology of Science: A Review of Steven French's A Phenomenological Approach to Quantum Mechanics. Cutting the Chain of Correlations Husserl Studies, Vol. 41, p. 137-143 (Article, review/survey) Continue to DOI
Harald Wiltsche (2025) Physik als 'halbe Sache': Zur notwendigen Unabgeschlossenheit mathematischer Repräsentationen Zu den halben Sachen selbst!: Philosophische Zugänge zum Unfertigen, p. 65-90 (Chapter in book)

2024

Peter Vickers, Ludovica Adamo, Mark Alfano, Cory Clark, Eleonora Cresto, He Cui, Haixin Dang, Finnur Dellsén, Nathalie Dupin, Laura Gradowski, Simon Graf, Aline Guevara, Mark Hallap, Jesse Hamilton, Mariann Hardey, Paula Helm, Asheley Landrum, Neil Levy, Edouard Machery, Sarah Mills, Seán Muller, Joanne Sheppard, Shinod N. K., Matthew Slater, Jacob Stegenga, Henning Strandin, Michael T. Stuart, David Sweet, Ufuk Tasdan, Henry Taylor, Owen Towler, Dana Tulodziecki, Heidi Tworek, Rebecca Wallbank, Harald Wiltsche, Samantha Mitchell Finnigan (2024) Development of a novel methodology for ascertaining scientific opinion and extent of agreement PLOS ONE, Vol. 19, Article e0313541 (Article in journal) Continue to DOI
Harald Wiltsche (2024) Science Fiction and Thought Experiments Filosofin i samhället: En skriftserie från avdelningen för Filosofi och Tillämpad Etik, p. 55-67 (Chapter in book)
Harald Wiltsche (2024) Transcendental Approaches to Quantum Mechanics. Lessons from Bohr Studia Phænomenologica, Vol. 24, p. 37-58 (Article in journal) Continue to DOI
Philipp Berghofer, Harald Wiltsche (2024) Phenomenology and Physics Encyclopedia of Phenomenology (Chapter in book) Continue to DOI
Philipp Berghofer, Harald Wiltsche (Editorship) (2024) Phenomenology and QBism: New Approaches to Quantum Mechanics

Research on Philosophy and Applied Ethics

News

News

23 January 2025

Network to measure consensus among researchers is growing

In 2023, LiU joined a worldwide project to measure the extent of consensus among researchers on burning scientific issues. After a successful test, the number of higher education institutions that have registered interest has more than doubled.

Professor Harald Wiltsche outside Studenthuset at Campus Valla in Linköping.

20 September 2023

LiU participates in project to measure consensus in science

Would it be possible to launch worldwide surveys to determine scientific consensus on a particular issue? If so, could this be a cure for disinformation? Linköping University has joined a project to test this.

White puzzle pieces against a white background.

03 January 2022

Epistemological, philosophical and sociocultural perspectives on post-COVID

A project that has received SEK 30 million from the Swedish Research Council is to study post-COVID from different angles. Researchers based at the Department of Culture and Society will contribute with epistemological and sociocultural perspectives.

Organisation