Welcome to Susumu CATO's website

Professor, Institute of Social Science, University of Tokyo

Email: susumu.cato[at]gmail.com (replace [at] with @)

Correspondence Address

Institute of Social Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033

Research Fields

• Social Choice Theory

• Political Philosophy (distributive justice & population ethics)

• Politics, Philosophy, and Economics (PPE)

• Welfare Economics

• Organizational Economics

• Industrial Organization

News

• Jan 21: Co-organizing an international workshop

  • Title: Inclusiveness and Sustainable Development

  • Venue: Venue: Sanjō Conference Hall, University of Tokyo

    • 11:50 PM - 12:50 PM: Ayako Ozawa (DBJ) and Tatsufumi Aoyama (DBJ)

    • 12:50 PM - 1:00 PM: Welcoming and Opening Remarks

      • Susumu Cato (UTokyo) and Jungmin Park (SNU, Department of Social Welfare & PPE)

    • 1:00 PM - 2:20 PM: Session 1 (Sanjō Conference Hall, Two speakers, 40 minutes each)

      • Eric Weese (UTokyo, Institute of Social Science): Creative Destruction in the European State System: 1000-1850 (With David Schonholzer)

      • Hyunwoo Hong (CNU, Department of Economics): Climate Justice: Historical Accountability vs. International Paretianism

    • 2:20 PM - 2:40 PM: Coffee/Tea Break

    • 2:40 PM - 4:00 PM: Session 2 (Sanjō Conference Hall, Two speakers, 40 minutes each)

      • Biung-Ghi Ju SNU, Department of Economics & PPE): Adam Smith Theorem: Justice Leads Prosperity

      • Ayumi Igarashi (UTokyo): Fair allocation of indivisible items under category constraints

    • 4:00 PM - 4:10 PM: Closing Remarks

  • Hosted by

    • Economics Program in Seoul National University (main organizer) 

    • "Methodology of Social Sciences" project of Institute of Social Science, University of Tokyo (co-organizer) 

    • Research Institute of Capital Formation, Development Bank of Japan. (co-organizer)

• Jan 28, 2025: A new paper has been accepted.

  • Title: Rational Incompetence of Voters

  • Journal: Journal of Ethics and Social Philosophy

• Jan 30, 2025: 2nd Workshop on Social Choice Theory 

• Feb 7, 2025: A new paper has been accepted.

  • Title: Positional Conditional Egalitarianism 

  • Journal: Inquiry: An Interdisciplinary Journal of Philosophy

  • Co-author: Ken Oshitani

• Feb 13: A paper has been accepted: 

  • Title: Ex-post approaches to prioritarianism and sufficientarianism

  • Journal: Theoretical Economics

  • Co-authors: Matthew D. Adler, Walter Bossert, and Kohei Kamaga

• March 6, 2025: ISS Analytical Philosophy Workshop

Program：
10:00-10:15 Opening Remarks

10:15-11:15 Kumie Hattori (University of Tokyo)

• Title Retroactive Blame in Law

• Chair Kiichi Inarimori

11:15-12:15 Joel A. Van Fossen (Hosei University)

• Title Appreciation, Inquiry, and Deliberation: Exploring the Structure of Three Processes [joint work with Daniel Star]

• Chair Ken Oshitani

12:15-13:45 Lunch Break

13:45-14:45 Jeroen Hopster (Utrecht University)

• Title: Climate Disruption, Legitimate Expectations, and the Value of Stability

• Chair Arata Matsuda

14:45-15:00 Coffee Break

15:00-16:00 Susumu Cato (University of Tokyo)

• Title: What the Demands of Sustainability Can(not) Be. [joint work with Katie Steele]

• Chair Clara Brigitta Riegler

16:00-17:00 Kengo Miyazono (Hokkaido University)

• Title A Non-Cognitivist Account of Moral Responsibility and Free Will [joint work with Kiichi Inarimori]

• Chair Susumu Cato

• May 4: A paper has been accepted: 

  • Title: Effects of Sanctions on Criminalized Prostitution Markets

  • Journal: Review of Law & Economics

  • Co-author: Ken Yahagi

• June 12, 2025: ISS Analytic Philosophy Workshop

  • • 13:00-14:00: Tatsuya Yoshii (Kyoto University) & Jun Otsuka (Zen University) “A Categorical Solution to the Grue Paradox” Chair: TBA

    • 14:10-14:50: Susumu Cato (University of Tokyo) “Revisiting the Okasha-Morreau Problem of Theory Choice” Chair: TBA

    • 15:20-16:20: Eddy Keming Chen (University of California, San Diego) “Exchangeability and Algorithmic Randomness: A New Proof of the Principal Principle” Chair: TBA

    • 16:30-17:30: Alan Hájek (Australian National University) “A Chancy Theory of Counterfactuals” Chair: Masaki Ichinose (Musashino University)

• June 26, 2025: A paper has been accepted: 

  • Title: An axiomatic characterization of the proportional threshold methods: A geometric approach

  • Journal: Social Choice and Welfare

  • Co-authors: Stéphane Gonzalez, Eric Rémila, Philippe Solal

• July 9, 2025: A paper has been accepted:

  • Title: Welfarism and Continuity in Ethical Theory: A Formal Comparision of Prospect Utilitarianism vs. Sufficientarianism

  • Journal: Economics and Philosophy

  • Co-author: Hun Chung 

• Sept 17, 2025: A paper has been accepted:

  • Title: The structure of critical sets 

  • Journal: Philosophical Studies

  • Co-authors: Walter Bossert and Kohei Kamaga