Unit 12 Subscriber Brief: Outer Space Colonization — Complete LD Brief with Cases, Philosophy Cards, and Round Strategy
Unit 12 Subscriber Brief · Lincoln-Douglas · September/October 2026 · Knowledge Packet
Resolved: Outer space colonisation is a moral imperative.
PART ONE: PHILOSOPHICAL OVERVIEW
What Makes This Resolution Distinctive
Most LD resolutions require debaters to apply moral frameworks to a specific policy context. This resolution asks something harder: whether a particular goal — extending human civilisation to other worlds — generates a genuine obligation, not just a preference or a permission.
The word 'imperative' is doing the central philosophical work. In ordinary usage, an imperative is a strong command. In Kant's moral philosophy, an imperative is specifically a command of reason — something binding on any rational agent regardless of their desires. AFF must argue that space colonisation is obligatory in this strong sense. NEG wins by showing that the obligation does not exist, or that a competing obligation takes priority.
This is a harder claim than it might appear. It is not enough for AFF to show that colonisation is good, valuable, or worth pursuing. AFF must show that failing to pursue it constitutes a moral failure — that a rational, morally serious civilisation that chose not to colonise space would be doing something wrong.
Core Philosophical Sources
The following texts are the primary philosophical resources for this topic. Debaters should know enough about each to quote accurately, apply correctly, and answer challenges.
Immanuel Kant, Groundwork of the Metaphysics of Morals (1785): The foundational text of deontological ethics. Kant's two most relevant formulations for this topic are the Universal Law formulation — 'Act only according to that maxim by which you can at the same time will that it should become a universal law' — and the Humanity formulation — 'Act so that you treat humanity, whether in your own person or that of another, always as an end and never as a means only.' The application of these to space colonisation requires careful argument: AFF uses the Humanity formulation to argue that allowing conditions for rational agency to be destroyed violates the imperative to treat humanity as an end; NEG uses it to argue that present people have rights that constrain what we can demand of them in the name of future colonisation.
Derek Parfit, Reasons and Persons (Oxford University Press, 1984): Part IV, 'Future Generations,' is directly relevant. Parfit argues that temporal distance provides no moral reason to discount the interests of future people — a person who will exist in 2200 has interests that matter morally as much as a person who exists today. He also introduces the non-identity problem: policies that affect which people come to exist cannot benefit or harm the specific people who result from those policies, because those people would not have existed under alternative policies. Both arguments are double-edged for this topic and require careful deployment.
John Rawls, A Theory of Justice (Harvard University Press, 1971, revised 1999): The difference principle — that social and economic inequalities are just only if they benefit the least advantaged members of society — provides the most rigorous philosophical basis for NEG's justice-based arguments. Rawls' veil of ignorance thought experiment is also useful: behind the veil, not knowing whether you would be a present person in poverty or a future person who might benefit from colonisation, which institutional arrangements would rational persons choose?
Peter Singer, 'Famine, Affluence, and Morality' (Philosophy and Public Affairs, 1(3), 1972, pp. 229-243): Singer argues that if we can prevent something bad from happening without sacrificing anything of comparable moral importance, we ought to do it. He applies this to the obligation to donate to famine relief but the principle applies broadly. For NEG, Singer provides a philosophical foundation for the opportunity cost argument: if the same resources directed to space colonisation could instead prevent preventable deaths at much lower cost per life, Singer's principle obligates us to do the latter.
Martha Nussbaum, Creating Capabilities: The Human Development Approach (Harvard University Press, 2011): Nussbaum's capabilities approach holds that justice requires enabling every person to exercise core human capabilities above a minimum threshold. For NEG, this provides a criterion that space colonisation demonstrably fails: billions of people currently fall below this threshold in basic health, education, and political participation, and their claims take priority over speculative future expansion.
Nick Bostrom, 'Existential Risk Prevention as Global Priority' (Global Policy, 4(1), 2013, pp. 15-31): Bostrom defines existential risks as those threatening the entire future of humanity and argues that their prevention deserves priority because the magnitude of what is at stake — all future human potential — is so large. This is the AFF's strongest consequentialist foundation. Note carefully: Bostrom does not in this paper assign a specific probability figure to existential risk within the next century.
Toby Ord, The Precipice: Existential Risk and the Future of Humanity (Hachette Books, 2020): Ord provides the specific probability estimates that are often cited in rounds. His estimate — described explicitly as his personal estimate based on available evidence — is approximately 1 in 6 (roughly 16-17%) that humanity will face existential catastrophe in the next 100 years. This estimate is Ord's own judgment, not a consensus figure, and Ord explicitly acknowledges significant uncertainty. AFF teams who cite this should attribute it to Ord specifically and note it is an estimate.
Hans Jonas, The Imperative of Responsibility (University of Chicago Press, English translation 1984): Jonas argues that the possibility of irreversible harm — particularly extinction — creates a unique ethical obligation: we must act to prevent the worst possible outcome even under uncertainty. His 'principle of precaution' applied to space colonisation supports AFF: the asymmetry between extinction (irreversible) and the cost of colonisation (finite) justifies treating colonisation as obligatory.
PART TWO: COMPLETE AFF CASE
Value: Human Dignity
Human dignity — the intrinsic and inviolable moral worth of persons as rational, autonomous agents — is the foundational concept of modern moral philosophy. Kant grounds dignity in our capacity for rational self-governance. The Universal Declaration of Human Rights (1948) locates all human rights in 'the inherent dignity and inalienable rights of all members of the human family.'
Human dignity is not merely a value to be balanced against others. It is, in Kant's framework, the ground of moral value itself — the reason why persons cannot be treated merely as means, why rights are not merely preferences, and why moral rules bind us categorically rather than conditionally.
Criterion: Preserving the Conditions for Moral Agency
Moral agency — the capacity to reason, choose, and act according to moral principles — requires agents who exist and can exercise that capacity. If humanity goes extinct, moral agency ceases. The categorical imperative itself cannot be applied by anyone. The value of human dignity cannot be honoured by anyone.
Therefore, any agent who takes morality seriously has a fundamental obligation to preserve the conditions under which morality is possible. Space colonisation uniquely serves this criterion by making the survival of humanity robust against Earth-specific catastrophic risks — an asteroid impact, a supervolcanic eruption, an engineered pandemic, or a nuclear exchange cannot eliminate humanity if it exists on multiple worlds.
AFF Contention 1: The Existential Imperative
Claim: Humanity faces a non-trivial probability of extinction from Earth-based risks, and space colonisation is the most reliable strategy for making human survival robust against those risks.
Warrant A — Extinction risks are real and documented. Toby Ord, in The Precipice (2020), provides the most systematic analysis available of extinction-level risks. His personal estimate is approximately 1 in 6 that humanity will face existential catastrophe within the next 100 years, with the largest contributions coming from engineered pandemics and misaligned artificial intelligence. Over longer timescales, natural risks — asteroid impact, supervolcanism — become more significant. On a timescale of millions of years, a large asteroid impact becomes a near-certainty. Earth is a single planet in a solar system full of objects whose orbits are not entirely predictable on long timescales.
Warrant B — Earth-confinement is a single-point-of-failure vulnerability. Every human being, every cultural artefact, every record of human thought currently exists on a single planet. From a risk management perspective, this is a catastrophic concentration. Multi-planetary civilisation is more resilient: no Earth-specific event can eliminate humanity if it is distributed across multiple worlds. The principle does not require immediate Mars colonisation — it requires treating multi-planetary capability as a strategic priority of civilisational importance.
Warrant C — Kantian moral agency requires its own preservation. The Humanity formulation of the categorical imperative requires treating rational nature — in ourselves and in others — as an end in itself. A civilisation that has the capacity to reduce the risk of its own extinction and chooses not to is treating rational nature as expendable. It is failing to honour the dignity of all future rational persons whose existence depends on the survival of the civilisation from which they would descend.
Impact: The permanent loss of humanity is the largest possible moral catastrophe. Every future person who would have lived, every work of art that would have been created, every moral progress that would have been made — all of it is permanently foreclosed. Jonas' principle of precaution holds that the asymmetry between this irreversible outcome and the finite cost of preventing it generates an obligation to act.
Frontline on 'Earth-based risk reduction is sufficient': Earth-based risk reduction — pandemic preparedness, nuclear security, climate adaptation — reduces specific risks but does not address the full range of existential threats humanity faces. Asteroid impact remains a risk regardless of how well we manage biosecurity. Only multi-planetary civilisation provides resilience against the full range of Earth-specific catastrophic risks.
Frontline on 'the probability is too low to generate an obligation': Ord's estimate is explicitly his personal judgment under uncertainty. AFF does not need to defend a specific probability figure. The argument is structural: (1) the magnitude of extinction is infinite relative to any finite cost of prevention, (2) the probability is non-zero, (3) therefore the expected value of colonisation is positive under any reasonable expected value framework. Jonas' precautionary argument does not depend on probability estimates at all — it depends on the asymmetry between irreversible and reversible outcomes.
AFF Contention 2: The Virtue of Exploration
Claim: Virtue ethics — specifically Aristotle's account of human nature and flourishing — supports space colonisation as the expression of humanity's distinctively rational and curious nature.
Warrant A — Human nature includes the drive to know. Aristotle opens the Metaphysics: 'All human beings by nature desire to know.' He offers this as a claim about human essence — what distinguishes us from other animals is not merely our capacity for language or social life, but our capacity for theoretical knowledge: inquiry that goes beyond immediate practical necessity. Every great expansion of the human cognitive horizon — the realisation that Earth is not the centre of the cosmos, the discovery that matter is composed of atoms, the confirmation that the universe is 13.8 billion years old — has been an expression of this distinctively human capacity.
Warrant B — Eudaimonia requires the full expression of human capacities. Aristotle's concept of eudaimonia — human flourishing — is not contentment or pleasure but the full and excellent exercise of distinctively human capacities. A person who has the capacity for philosophical inquiry but never exercises it fails, in Aristotle's account, to fully flourish. The same principle applies at civilisational scale: a civilisation that has the capacity to extend human presence to other worlds but chooses not to is choosing a lesser form of flourishing — an excellence withheld.
Impact: Virtue ethics grounds the imperative in what we are rather than what outcomes we calculate. Even if the existential risk argument were defeated, the virtue ethics argument would remain: the failure to pursue space colonisation is a failure of civilisational courage and curiosity, a refusal to be what we are capable of being.
PART THREE: COMPLETE NEG CASE
Value: Justice
Justice — the proper ordering of obligations to persons according to their fundamental moral standing — is, in Rawls' formulation, 'the first virtue of social institutions, as truth is of systems of thought.' A society that fails its most vulnerable members while pursuing speculative future benefits has inverted the proper ordering of moral priorities.
Criterion: Fulfilling Obligations to Existing Persons
Our obligations to existing people — people who are alive, who suffer, whose interests are determinate and verifiable — are stronger than our obligations to speculative future people whose existence, number, and interests we cannot know with confidence. A moral framework that consistently requires sacrificing the certain welfare of existing persons for speculative future benefits is not a framework that can command general assent from the people it governs.
NEG Contention 1: Present Obligations Take Priority
Claim: We have immediate, pressing, and achievable obligations to existing people that are stronger than any speculative obligation to colonise space, and the resources required for colonisation are better directed to meeting these obligations.
Warrant A — Rawls' difference principle. The difference principle, from A Theory of Justice (1971), holds that social and economic inequalities are just only if they benefit the least advantaged members of society. Applied to space colonisation: in a world where approximately 700 million people live below the international extreme poverty line of $2.15 per day (World Bank, 2023 data), where 2 billion people lack safely managed drinking water (WHO/UNICEF Joint Monitoring Programme, 2023), and where millions of children die annually from preventable causes, the allocation of resources to space colonisation can only be justified under Rawls' framework if it can be shown to benefit the worst-off. This has not been shown.
Warrant B — Singer's principle of preventing avoidable harm. In 'Famine, Affluence, and Morality' (1972), Singer argues: 'If it is in our power to prevent something bad from happening without thereby sacrificing anything of comparable moral importance, we ought, morally, to do it.' Preventing a child from dying of a preventable disease at a cost of tens of dollars is within our power and does not require sacrificing anything of comparable moral importance. Directing the same resources to space colonisation — at a cost per person transported that is orders of magnitude higher than the cost per life saved through basic health interventions — sacrifices comparable moral value. Singer's principle, applied consistently, prioritises high-certainty, low-cost interventions over high-cost, speculative ones.
Warrant C — Nussbaum's capabilities threshold. Nussbaum identifies ten core human capabilities — life; bodily health; bodily integrity; senses, imagination, and thought; emotions; practical reason; affiliation; other species; play; and control over one's political and material environment — that justice requires every person to be able to exercise above a minimum threshold. Billions of people are below this threshold in multiple capabilities. Until the threshold is met for existing persons, resources directed to expanding the sphere of human activity rather than meeting basic human needs represent a misallocation under justice.
Impact: The obligation to prevent certain, immediate, preventable harm to identifiable persons is stronger than the obligation to reduce uncertain, distant, speculative risk to future persons. This is not a claim that future people do not matter — it is a claim about the ordering of obligations when resources are finite. If both present and future persons matter, but present persons face certain harm while future persons face speculative risk, the present obligation is more urgent.
Frontline on 'extinction affects everyone, including the poor': Extinction risk is probabilistic and contested. Present poverty is certain. Under conditions of scarcity, the certainty of present harm generates a stronger immediate obligation than the probability of future catastrophe. Moreover, many extinction risks — particularly pandemic and climate-related — are better addressed through present investment in global health systems and clean energy than through space colonisation.
NEG Contention 2: The Ethics of Colonisation
Claim: The specific act of 'colonisation' as historically understood and as practically proposed carries moral burdens that prevent it from constituting a moral imperative.
Warrant A — The word carries moral history. 'Colonisation' in the human historical record has consistently involved the appropriation of territory, the extraction of resources, and the displacement or destruction of peoples and ecosystems that were in the way. Advocates of space colonisation typically argue that this history is irrelevant because space is uninhabited. This argument requires a factual premise — that the target environments have no life — that has not been established. NASA's Office of Planetary Protection maintains active protocols for preventing biological contamination of Mars and other bodies precisely because the scientific community regards the possibility of extant microbial life as worthy of serious precaution.
Warrant B — As currently structured, space colonisation is a project of corporations and wealthy states, not of humanity. The Outer Space Treaty of 1967 prohibits national claims of sovereignty over celestial bodies, but the US Commercial Space Launch Competitiveness Act of 2015 explicitly grants American companies the right to own resources extracted in space. If space colonisation proceeds as currently structured, the benefits — resources, territory, strategic position — will accrue to a small number of corporations and their shareholders, while the costs — opportunity cost of resources not spent on present needs — are borne by the general population and in particular by the poorest people whose needs go unmet.
Warrant C — Terraforming raises unresolved ethical questions. A self-sustaining colony on Mars would eventually require terraforming — the deliberate alteration of Mars' atmosphere, temperature, and water availability to make it habitable for human life. This is an irreversible transformation of another world. The ethical questions it raises — whether we have the right to transform another planetary body, what obligations we have to any extant life, who decides — are not resolved. An action whose ethics are unresolved cannot be declared a moral imperative.
PART FOUR: PHILOSOPHY EVIDENCE CARDS
AFF Cards
Card A-1: Ord on Existential Risk Probability
Citation: Toby Ord, The Precipice: Existential Risk and the Future of Humanity (Hachette Books, 2020), pp. 167-168.
Author: Toby Ord — Senior Research Fellow, Future of Humanity Institute, University of Oxford. Ord is a moral philosopher specialising in global health and existential risk. The Precipice was widely reviewed in academic philosophy and received endorsements from prominent philosophers and scientists.
Content summary: Ord provides a structured analysis of major categories of existential risk — natural risks (asteroid impact, supervolcanism) and anthropogenic risks (nuclear war, climate change, engineered pandemics, misaligned AI). His overall estimate of approximately 1 in 6 for existential catastrophe within 100 years is his personal estimate, based on available scientific literature and his own judgment about the probabilities. He explicitly acknowledges this is not a consensus figure and that the uncertainty is large. The book argues that existential risk reduction should be among humanity's highest priorities.
Round use: Use to establish the factual foundation for AFF Contention 1. Attribute the probability estimate to Ord specifically and characterise it as his estimate — this is more credible than overstating it as established consensus, and it pre-empts NEG's attempt to undermine it by pointing out it is one person's judgment.
Card A-2: Parfit on Future Generations
Citation: Derek Parfit, Reasons and Persons (Oxford University Press, 1984), Part IV, Chapter 16.
Author: Derek Parfit — Senior Research Fellow, All Souls College, Oxford. Reasons and Persons is widely regarded as the most important work of analytic moral philosophy published in the second half of the twentieth century. Parfit's work on personal identity and future generations has been enormously influential in both philosophy and policy.
Content summary: Parfit argues that the interests of future people matter morally just as much as those of present people — temporal distance, like spatial distance, provides no morally relevant reason to discount their interests. He distinguishes this from the non-identity problem (discussed separately) to clarify that the general claim — future people matter — is defensible even if some specific claims about harming particular future people are complicated by non-identity considerations.
Round use: Use in rebuttals when NEG runs Singer's 'help present people' argument. Parfit establishes that present people and future people both matter — the question then becomes which obligation is stronger, not whether future people's interests count at all.
Card A-3: Kant — Humanity Formulation
Citation: Immanuel Kant, Groundwork of the Metaphysics of Morals (1785), 4:429, translated by Mary Gregor (Cambridge University Press, 1998).
Author: Immanuel Kant — Professor at the University of Königsberg; the most influential moral philosopher of the modern era.
Exact text: 'Act so that you treat humanity, whether in your own person or that of another, always as an end and never as a means only.'
Application: AFF uses this formulation to argue that allowing the conditions for rational humanity — human existence itself — to be destroyed through negligence treats rational nature as merely contingent, as something that can be sacrificed. This violates the categorical command to treat humanity as an end. Note: this application requires AFF to argue that Kant's 'humanity' applies to future rational persons, not just currently existing ones — a reasonable extension of his framework but one that NEG can contest.
NEG Cards
Card N-1: Rawls — Difference Principle
Citation: John Rawls, A Theory of Justice (Harvard University Press, 1971, revised edition 1999), §13, pp. 72-78.
Author: Rawls — Professor of Philosophy at Harvard University from 1962 until his retirement. A Theory of Justice is the most influential work of political philosophy published in the twentieth century in the English-speaking world.
Exact text: 'Social and economic inequalities are to be arranged so that they are both (a) to the greatest benefit of the least advantaged members of society, and (b) attached to offices and positions open to all under conditions of fair equality of opportunity.'
Application: Space colonisation programmes, as currently structured, primarily benefit wealthy nations and technology corporations. The least advantaged members of global society — those without food security, clean water, or basic healthcare — do not obviously benefit. Under Rawls' difference principle, this allocation requires justification that has not been provided.
Card N-2: Singer — Famine, Affluence, Morality
Citation: Peter Singer, 'Famine, Affluence, and Morality,' Philosophy and Public Affairs, 1(3), Spring 1972, pp. 229-243.
Author: Peter Singer — Professor of Bioethics at Princeton University's Center for Human Values. One of the most influential and widely read living moral philosophers.
Exact text: 'If it is in our power to prevent something bad from happening, without thereby sacrificing anything of comparable moral importance, we ought, morally, to do it.'
Application: Preventing a child from dying of a treatable disease is within our power and does not require sacrificing anything of comparable moral importance. Redirecting those resources to space colonisation requires sacrificing comparable moral value. Under Singer's principle, present preventable death takes priority over speculative future benefit.
Card N-3: Nussbaum — Capabilities Threshold
Citation: Martha Nussbaum, Creating Capabilities: The Human Development Approach (Harvard University Press, 2011), pp. 33-34.
Author: Martha Nussbaum — Ernst Freund Distinguished Service Professor of Law and Ethics at the University of Chicago. Winner of the Kyoto Prize in Arts and Philosophy (2016), one of the most prestigious awards in the humanities.
Exact text: 'A life that does not contain opportunities for the exercise of [central human capabilities] is not a life commensurate with human dignity... The task of ensuring all citizens these minimum levels of each capability is a matter of basic justice.'
Application: Billions of people lack capabilities that Nussbaum identifies as basic requirements of a life commensurate with human dignity. The justice obligation to meet this threshold for existing persons takes priority over expanding the scope of human activity through colonisation.
Card N-4: Parfit — Non-Identity Problem
Citation: Derek Parfit, Reasons and Persons (Oxford University Press, 1984), Part IV, Chapter 16, 'The Non-Identity Problem.'
Author: Derek Parfit — Senior Research Fellow, All Souls College, Oxford.
Content summary: Parfit demonstrates that when a policy affects which people come into existence, we cannot say that the people who result from that policy have been harmed by it — because those specific people would not have existed under the alternative policy. This creates a philosophical puzzle for arguments that claim we owe specific duties to specific future people who would benefit from colonisation: those people do not exist, and different people would exist under the alternative.
Application: Use to contest AFF's specific claims about obligations to future colonists or future people who would benefit from multi-planetary civilisation. Note the double edge: non-identity also complicates some NEG arguments about future people's interests. Deploy carefully.
PART FIVE: CROSS-EXAMINATION QUESTION BANKS
AFF Asking NEG — 8 Questions
You say we should meet present obligations first. At what point is the threshold met? When all poverty is eliminated? When all preventable disease is cured? Is there ever a point at which your criterion is satisfied and colonisation becomes permissible?
You cite Singer's principle: prevent bad things at minimal cost. Is extinction not the worst bad thing that could happen? If so, doesn't Singer's principle support colonisation?
Your difference principle argument requires showing colonisation doesn't benefit the worst-off. Could a multi-planetary civilisation that survives an extinction event — and continues to develop medicine, agriculture, and technology — not eventually benefit everyone, including the poorest?
You say colonisation is a corporate project. But so were railroads, telecommunications, and the internet — all technologies that eventually produced broad social benefit. Why is the corporate structure of the initial project decisive for whether it constitutes a moral imperative?
You raised the possibility of Martian life. If we confirmed there is no life on Mars, does your colonialism argument collapse?
You said Rawls' difference principle bars colonisation because it doesn't benefit the worst-off. But isn't preserving the possibility of any human civilisation — including the possibility of eventually helping the worst-off — exactly what benefits the least advantaged if the alternative is extinction?
You invoked Nussbaum's capabilities threshold. Nussbaum's ten capabilities include 'other species' and 'play' — does Nussbaum herself say anything about space exploration as an expression of human capability?
If you reject the existential imperative argument on probability grounds, what probability of extinction would be high enough to generate the obligation you're denying?
NEG Asking AFF — 8 Questions
You say space colonisation preserves conditions for moral agency. If the obligation is to preserve conditions for moral agency, why is colonisation specifically required — couldn't pandemic preparedness, nuclear disarmament, and climate adaptation do the same thing at a fraction of the cost?
Your Ord card says the probability of existential catastrophe is 1 in 6 in the next 100 years. Ord himself says this is his personal estimate under significant uncertainty. How confident are you in a 17% figure as the basis for a moral imperative?
You said colonisation doesn't require abandoning Earth's problems. But you're arguing for a moral imperative — not just permission, but obligation. If it's obligatory, who is obligated, and how much are they required to sacrifice for it?
Your virtue ethics argument says a civilisation that can colonise but doesn't is choosing lesser flourishing. Aristotle also thought that some people were natural slaves. How do we distinguish the parts of Aristotle's ethics we should follow from the parts we should discard?
You said the opportunity cost of colonisation is small relative to global GDP. NASA's budget is about $25 billion per year. A self-sustaining Mars colony has been estimated by credible analysts at costs in the tens of trillions of dollars. Which estimate are you using for the cost of the moral imperative?
Your colonisation framework assumes we have the right to transform Mars if needed. If NASA tomorrow confirmed microbial life on Mars, would you still defend colonisation as a moral imperative?
You said multi-planetary civilisation protects against extinction. If humanity colonises Mars and then a civilisation-ending pandemic sweeps both planets, did colonisation fulfil the moral imperative?
Who has the legal authority under international law to carry out space colonisation? The Outer Space Treaty bars national sovereignty claims. If no entity has the legal authority to colonise, can it be a moral imperative?
PART SIX: REBUTTAL STRATEGY
AFF 1AR — Priority Order
First: protect your value-criterion. If NEG contests it, explain why preserving conditions for moral agency is the correct criterion: without moral agents, no other values can be pursued or protected.
Second: turn Singer. Singer's principle says prevent bad things at minimal cost. The most minimal cost prevention of extinction-level harm is investment in multi-planetary capability — far cheaper per expected life saved than almost any alternative. Singer's framework, consistently applied, supports AFF.
Third: answer the present-obligations argument directly. You do not need to deny that present obligations exist. Argue that (a) colonisation does not require abandoning present obligations — the cost is a small fraction of global economic capacity, and (b) Parfit establishes that future persons have equal moral weight, so the magnitude calculation still favours colonisation.
Fourth: handle non-identity carefully. NEG will use Parfit against you. Your response: Parfit's framework in the aggregate — his point that there will be vastly more future people than present people — still supports treating extinction as the supreme moral catastrophe, even if we cannot identify specific harmed future persons.
NEG 2NR — Priority Order
First: win the present-versus-future clash. Frame it clearly: 'NEG does not deny that future people matter. We argue that when resources are finite, the certain harm of existing persons generates a stronger immediate obligation than the speculative risk of future catastrophe. This is the position of Rawls, Singer, and Nussbaum — the most rigorous moral philosophers on questions of justice and obligation.'
Second: collapse the imperative claim. AFF has established that extinction is bad and colonisation is one strategy to reduce its probability. AFF has not established that colonisation specifically is the only or most effective strategy. Earth-based risk reduction addresses many of the same risks. The resolution requires AFF to prove the obligation is to colonise, not merely to reduce existential risk.
Third: impact calculus. Summarise your weighing position in three moves: certainty (present harm is certain; extinction is probabilistic), immediacy (present harm is now; extinction risk materialises over decades to centuries), and tractability (present poverty and preventable disease are tractable with known tools; self-sustaining space colonisation has no proven path at any specified cost).
PART SEVEN: COACH GUIDANCE NOTES
For AFF coaches: The most common AFF error is arguing that colonisation is a good idea rather than a moral obligation. Train students to return constantly to the word 'imperative' — what makes an action required rather than merely permitted or recommended? The strongest AFF position builds on Jonas' precautionary argument (the asymmetry between irreversible and reversible outcomes) rather than relying on specific probability estimates that can be attacked.
The virtue ethics contention is best used as a secondary argument. It is genuinely Aristotelian and philosophically defensible, but it has a weaker connection to the specific word 'imperative' than the existential risk argument. In rounds where the existential risk argument is going well, the virtue ethics contention adds depth. In rounds where it is being contested effectively, the virtue ethics contention can become a distraction.
For NEG coaches: The strongest NEG position is not to deny that extinction is bad or that space exploration has value — it is to deny that the specific obligation to colonise follows from these premises. Earth-based risk reduction addresses many of the same risks at lower cost. The difference principle and capabilities threshold provide principled grounds for prioritising present obligations over speculative future ones.
Train students to handle the AFF's Singer turn — the argument that Singer's own principle obligates colonisation because extinction is the worst bad thing. The response: Singer's principle requires preventing bad things without sacrificing things of comparable moral importance. Redirecting trillions of dollars from present human welfare to space colonisation does sacrifice things of comparable moral importance, which is exactly why Singer's principle does not generate this obligation cleanly.
The non-identity problem is a sophisticated philosophical tool that should be used with precision. It complicates specific AFF arguments about obligations to future colonists, but it also complicates some NEG arguments. Students who use it should know both sides of it.