| Region: | Western philosophy |
| Era: | Contemporary philosophy |
| Gideon Rosen | |
| Birth Date: | 1962 |
| Alma Mater: | Columbia University (BA) Princeton University (PhD) |
| School Tradition: | Analytic philosophy |
| Main Interests: | Metaphysics, philosophy of mathematics, ethics |
| Notable Ideas: | Modal fictionalism |
| Influences: | Paul Benacerraf, David K. Lewis |
| Doctoral Advisor: | Paul Benacerraf |
Gideon Rosen (born 1962) is an American philosopher. He is a Stuart Professor of Philosophy at Princeton University, where he specializes in metaphysics, philosophy of mathematics, and ethics.
Rosen graduated from Columbia University in 1984 and obtained his Ph.D. at Princeton in 1992, under the supervision of Paul Benacerraf.[1] [2] He taught at the University of Michigan, Ann Arbor for several years before joining the Princeton faculty in 1993. He has served as chair of Princeton's Council of the Humanities and director of the Behrman Undergraduate Society of Fellows.
He was elected a Fellow of the American Academy of Arts and Sciences in 2024.[3]
In 1990 Rosen introduced modal fictionalism, a popular position on the ontological status of possible worlds. He is the co-author of A Subject with No Object (Oxford University Press, 1997), a contribution to the philosophy of mathematics written with Princeton colleague John P. Burgess. His recent work in metaphysics is about the concept of ground.[4]
In moral philosophy, Rosen argues for a new variety of skepticism about moral responsibility, separate from the traditional dilemma posed by the compatibilism (incompatibilism) problem. According to Rosen, there is an epistemic problem for positive judgments of responsibility: such judgments are never justified because they are necessarily under-evidenced in a certain way, due to the nature of normativity and normative ignorance.[5]