Dilemma
How much weight do future people deserve?
If a billion people will exist in the 25th century, do their interests count for as much as the interests of a billion people alive now? The answer turns on what kind of reality the future has.
Context
Effective altruism's longtermist wing argues that future people are morally just as significant as present people; what matters most about the next century is its consequences for the next million. Critics on the left worry the framing licenses neglect of present suffering; critics on the right worry it licenses unaccountable speculation about the very distant. Climate ethics runs the same argument from a different starting point: every choice we make is also a choice about the world we leave to people who don't yet exist to speak. Indigenous ethics has long taught seven-generation thinking. AI existential-risk discourse is longtermism applied. The dispute looks like a debate about moral weight, but it sits atop an older question about whether future people are real, what kind of reality they have, and whether their reality is independent of, or constituted by, what we do now.
Why it matters
The framework's time attributes — time_ont_status (is time a real container, a network of relations among events, or something that arises from a non-temporal substrate?) and time_traversability (does time run once linearly, cycle, or branch?) — directly determine what kind of standing future people have. The schools partition along these axes, and the partition does not align with the realist/constructionist axis of the personhood and marriage dilemmas: philosophical realists and Buddhist process philosophers, who disagree on almost everything, can agree about cyclical time and thereby agree on intergenerational obligation.
The coordinates that split the schools
The stances
Future people are as real as you are — and their interests count for as much.
60 schoolsOn this view, time is a real container in which all moments equally exist. The future is not waiting to come into being; it is out there, and the people in it are real in the same sense you are. To discount their interests because they happen to be located further along the time axis would be like discounting the interests of someone located further along a spatial axis — morally arbitrary.
Where this stance leads ⓘ
- 1% The past is as real as the present; regret is a real attitude toward a real thing. on Is regret rational?
- 1% Extinct species are as real as we are; they have standing. on Do we owe extinct species something we cannot give them?
- 1% Yes — matter was created and is conserved as a real substance. on Is the world created from nothing?
- 1% Yes — the physical world is fully real, mind-independent, persisting. on Is the physical world fully real?
- 1% Matter is morally considerable insofar as it is created or conserved good. on Does matter have intrinsic moral standing?
Past, present, and future are bound in cycles — duties span generations as a matter of course.
26 schoolsOn these views, time is not a one-way arrow but a structure of return: cosmic cycles, karmic cycles, the seasons, the succession of generations. To act now is always also to act for the ancestors who shaped your inheritance and for the descendants who will inherit yours. Intergenerational obligation isn't an inference from a moral theory — it's the default structure of being in time at all.
Where this stance leads ⓘ
- 1% The past is part of a cycle one keeps returning to; regret is one of the gates of the cycle. on Is regret rational?
- 1% Past beings are part of the cycle; we owe them what we owe ancestors. on Do we owe extinct species something we cannot give them?
- 1% Loss is part of cycles; what disappears returns in another form. on Is environmental damage ever truly permanent?
- 1% Civilization rises and falls in cycles; recovery is structural to history. on Can a civilization recover from collapse?
- 1% Local entropy increase is part of a cycle; the moral category is participation in the cycle. on Does the second law of thermodynamics mean something morally?
The future branches — what we owe depends on which branch we create.
5 schoolsOn these views, time is not a single line stretching forward but a tree of possibilities, at each moment opening into alternatives. Future people are real in some sense, but which future people exist depends on which branches get actualized — and that is the work of present choice.
Where this stance leads ⓘ
- 1% Other branches exist; regret tracks roads not taken that are nonetheless real. on Is regret rational?
- 1% Extinction is path-dependent; the species exists in branches we didn't take. on Do we owe extinct species something we cannot give them?
- 1% Prayer changes the pray-er, not the prayed-for. on Can prayer for someone far away affect them?
- 1% Coincidence is exactly what the math says it is. The pattern is in the noticer. on Are coincidences ever more than coincidence?
- 1% What is irreversible in this branch is reversible in another. on Is environmental damage ever truly permanent?
Time arises from events or from a deeper substrate — the future is not yet.
39 schoolsOn these views, time is not a fundamental container that already holds the future. It is either constituted by the ongoing pattern of events (relational time) or emerges from a non-temporal substrate — mind, becoming, lived experience (emergent time). Either way, the future is what present causes are unfolding into, not a place where people already are. Stewardship is still real, but the moral weight of acting now in light of future people lives on different footing from acting in light of those who already exist.
Where this stance leads ⓘ
- 1% The past is not a thing now; regret is the present holding what is no longer. on Is regret rational?
- 1% Past species no longer exist; what we owe is to the present and the future. on Do we owe extinct species something we cannot give them?
- 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?
From the One's vantage, generations are themselves conventional.
3 schoolsOn non-dual views, the distinction between present and future people is itself perspectival within a single underlying reality. Obligation across generations remains real at the conventional level where moral life happens; the metaphysical claim that future people 'exist' or 'don't yet exist' as a final ontological fact is what the view relativises. Stewardship is supported; the framing in which 'how much weight do future people get?' is a decidable ontological question shifts.
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.
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Related Historical Debates
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