Siegfried Jaag

Siegfried Jaag is a former Research and Teaching Fellow at the Department of Philosophy within the Faculty of Arts and Humanities at Heinrich-Heine-Universität Düsseldorf. His research focuses on the metaphysics of laws of nature, Humean Supervenience, and the interplay between philosophy of science, mind, and language. He has contributed to debates on natural laws, counterfactuals, and modal metaphysics.

Jaag earned his Ph.D. in 2015 with a dissertation on explaining natural laws. His work bridges historical philosophy (e.g., Hume and Descartes) with contemporary analytic metaphysics. Notable publications include Naturgesetze (2020) and Humean laws for human agents (2023), co-edited with Hicks and Loew. He received the GAP 2018 Best Paper Award for his work on Humean laws and nested counterfactuals.

His research interests span philosophy of science, metaphysics, and philosophy of artificial intelligence. He has authored entries in the Stanford Encyclopedia of Philosophy on ceteris paribus laws and contributed to edited volumes on Humean metaphysics. His recent work explores pragmatic turns in metaphysics and the normative force of natural laws.