Debate

Thesis Refusing to aggregate is contractualism’s best feature, not its embarrassing bug

August 17, 2026 · 5 replies

Moral theories Analytic Social contract theory Utilitarianism Frances Kamm T. M. Scanlon #aggregation #contractualism #numbers-problem #transmitter-room

Its coordinates: 3.2 Normative Ethics · 3.2.1 Consequence-Based Approaches · 3.2.2 Duty-Based Approaches +3 more

Where it stands

For 2Against 2

Scanlon's transmitter room case: a technician is trapped under equipment in a TV station, receiving painful electric shocks. Freeing him means interrupting the broadcast of a big football match for fifteen minutes, and millions of people are watching. Add up the millions of small disappointments and, on a simple aggregative view, they could outweigh his suffering. Almost nobody believes we should leave him there.

Contractualism explains why. Complaints are made by individuals. No single viewer has a complaint that comes close to his, and you can't stack viewers into a super-viewer. So rescue him.

I build machine learning systems, and I think this matters well beyond philosophy seminars. A lot of what I see justified in tech is aggregation: a feature that slightly improves the experience of millions while seriously harming a few thousand people gets shipped, because the totals look good. The individualist restriction is the one principled tool I know that says the totals are not the whole story.

The usual objection is the numbers problem: if only individual complaints count, why save five people rather than one when you can't save both? Scanlon has a "tie-breaker" reply, and critics say it smuggles aggregation back in. I'm willing to take that cost, or to accept some limited aggregation among comparable harms. What I'm not willing to give up is the veto.

Argue me out of it.

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5 replies

For the thesis 2

Omar Ragab 2 months ago

For Fellow

Medicine does this for a living. In triage, hospitals absolutely aggregate: they will treat the many with good prospects before the one who needs all the resources. But they also refuse to take one healthy patient's organs to save five, and no total will change that. So clinical ethics looks like your view, Pieter: a veto on certain uses of a person, with aggregation inside the space the veto leaves.

Helpful · 3
Dima Nasser 2 months ago

For Fellow

For. I advise on accessible buildings, and the most common argument I hear against a ramp, a lift or an accessible toilet is aggregative: it costs a lot, most users won't need it, and the money could make the building nicer for everyone. Each individual non-disabled user loses a tiny amount. The wheelchair user loses the building. Without something like the individualist restriction that argument wins every time, and it has been winning for most of my life.

Against the thesis 2

Ethan Mercer 2 months ago

Against Fellow

I'll argue against, as the resident utilitarian-adjacent person. The tie-breaker is doing more than you admit. Scanlon says that in a one-versus-two case, the second person in the larger group can complain that tossing a coin treats them as if they weren't there. But that complaint only makes sense if their presence adds something, which is aggregation by another name. Taurek's 1977 paper "Should the Numbers Count?" bit the bullet and said toss a coin. If you won't follow Taurek, you've already accepted that numbers matter, and then the question is just how much.

Helpful · 2
Javier Ferrandis 2 months ago

Against Fellow

Against. Every public budget is an aggregation, and someone always bears the cost of a decision that benefits others more. A health ministry that could never trade small benefits to many against large benefits to few couldn't fund vaccinations, which impose tiny risks on many to prevent serious harm to some. Contractualism can describe what's wrong with the worst cases, but I doubt it can run a ministry.

Helpful · 1

Other replies

Pieter van Dijkhuizen 2 months ago

Fellow

Fair hits, both of you. Revised position: I think the defensible version is limited aggregation. Kamm and others have worked on the idea that only harms in the same rough league as each other can be added: deaths with deaths, paralyses perhaps with deaths, but never headaches with deaths. That keeps the transmitter verdict, lets the ministry vaccinate, and saves the ramp. Whether it can be stated without arbitrariness is the open question, and I'm less confident than when I started.

Helpful · 2