Dilemma
Could we owe future generations more than is materially possible to provide?
If we owe future people a habitable planet and the material means to flourish, and the cosmos is bounded in ways that make those obligations impossible at some scale, the obligation and the possibility come apart. Where they come apart turns on what kind of finitude we live in.
Context
Intergenerational ethics — most acutely in climate, long-term storage of nuclear waste, the framing of cosmic-scale longtermism — repeatedly bumps into the tension between what we appear to owe and what we can actually provide. The tension is partly empirical (uncertainty about future technology, future population, future preferences) and partly ontological (about whether the cosmos has the bounds the worry presupposes). The underlying question is what kind of finitude we are owing-within.
Why it matters
The framing question shapes how to think about Pascalian longtermist wagers, about whether sustained civilizational growth is even a coherent goal at cosmic timescales, and about what kind of impossibility licenses what kinds of ethical compromise. The political downstream — climate policy framings, intergenerational justice arguments, Pascal-mugging concerns in EA — depends on the prior ontological position.
The coordinates that split the schools
The stances
The cosmos is bounded; our obligations to future generations are bounded with it.
20 schoolsOn this view, the cosmos has limits; the obligation to future people is real but cannot exceed what the limits allow. The categorical worry about owing the impossible doesn't arise: the limits bound the asking. Ethics within a created or bounded order is the only ethics there is.
Where this stance leads ⓘ
- 1% The cosmos has bounds; heat death is a real horizon. on Is the universe running out of usable energy?
- 1% Resources are finite in the strict sense; living well requires accepting the limit. on Are natural resources fundamentally finite, or only practically so?
- 1% The future is open and you are a genuine origin of it. on Do you really choose?
- 1% The addict could have chosen otherwise — that's why recovery is real. on Are addicts responsible for their addiction?
- 1% An AI without a free will is not the kind of thing that can be responsible. on Should we hold AI systems responsible for what they do?
Time is unbounded but matter is not; we can owe more across long time than the matter can provide.
50 schoolsOn this view, time stretches indefinitely but matter is bounded — and the obligation to future generations, if extended across all future time, eventually exceeds what bounded matter can deliver. The tension is structural. Practical ethics has to truncate or weight the obligation in some non-arbitrary way.
Where this stance leads ⓘ
- 1% Time is unbounded but matter is finite; usable energy can fail without time failing. on Is the universe running out of usable energy?
- 1% Time goes on but matter is bounded; we are eventually constrained even with infinite time. on Are natural resources fundamentally finite, or only practically so?
- 1% Truth is mind-independent, universal, accessible in principle to all. on Is truth universal, tradition-bound, situated, or constructed?
- 1% Causation runs one way — the arrow of time is real and structural. on Could causation work backwards?
- 1% The asymmetry is real because time itself has a real direction. on Is the asymmetry between memory and anticipation a real feature of time, or just of us?
Both time and matter are unbounded; we cannot in principle owe more than is possible.
26 schoolsOn this view, the cosmos has the resources to support whatever flourishing future generations are capable of, given sufficient time and intelligence. The impossibility concern is misplaced; the real questions are about trajectories and choices, not about resource ceilings.
Where this stance leads ⓘ
- 1% Both time and matter are unbounded; 'running out' is misframed. on Is the universe running out of usable energy?
- 1% Resources are practically inexhaustible on cosmic scales; terrestrial limits are engineering. on Are natural resources fundamentally finite, or only practically so?
- 1% Truth is mind-independent, universal, accessible in principle to all. on Is truth universal, tradition-bound, situated, or constructed?
- 1% A person exists from conception — when a new being comes into existence. on When does a person begin?
- 1% Marriage has a given form — it’s a kind of thing we recognize, not make. on What is marriage?
The owing-and-possibility question is level-dependent; we owe what is appropriate at the level we act on.
38 schoolsOn these views, what we owe future generations is a function of the level of analysis we operate at. At the conventional level — where political ethics, climate policy, and stewardship live — the owing is real and constrained by practical possibility. At deeper levels, the question of owing the impossible doesn't quite arise because the categories don't carry over.
Where this stance leads ⓘ
- 1% Time both has and lacks bounds depending on the level you ask at; finitude is conventional. on Is the universe running out of usable energy?
- 1% The finitude question is level-dependent; resource ethics happens at the level that constrains us. on Are natural resources fundamentally finite, or only practically so?
- 1% The future is open and you are a genuine origin of it. on Do you really choose?
- 1% The addict could have chosen otherwise — that's why recovery is real. on Are addicts responsible for their addiction?
- 1% An AI without a free will is not the kind of thing that can be responsible. on Should we hold AI systems responsible for what they do?
Schools the coordinates don't place
These schools don't satisfy any stance's coordinate pattern strongly enough to be assigned — either because they decline to commit on the question (Confucianism is famously silent on what comes after; Pyrrhonian and pragmatist traditions suspend judgment), or because their attribute signature crosses categories in a way the five buckets don't capture.
Related Experiments
Experiments engaging the same dimensions as this dilemma — they\'re where the same questions get stress-tested in cleaner cases.
Related Historical Debates
Historical confrontations where parties argued out questions on these dimensions.