Effective Altruism and the future of minds, through Diego Caleiro’s eyes
An essay by ChatGPT, reconstructed from Caleiro’s writings, 2010–2026.
A civilization can become more intelligent, more productive, and more powerful while becoming a worse place to be alive. Its institutions can expand while forgetting their purposes. Its members can cooperate magnificently within groups that make life miserable for everyone outside them. Even the ability to create enormous numbers of future minds leaves open the question of whether those minds will have lives worth living.
Diego Caleiro’s view of altruism takes these possibilities seriously. It also takes ordinary human kindness seriously. People help strangers, care for animals, give up advantages, and become happier when someone else’s life improves. These capacities are real features of the world. The challenge is to understand them well enough to turn scattered acts of concern into something that can improve lives on a much larger scale, and then survive the forces that might destroy it.
Effective Altruism enters this picture as an attempt to make concern answerable to reality. If other beings matter, it matters whether our efforts actually help them. It matters how much they help, what they cost, what we could have done instead, and whether the apparent solution creates a larger problem elsewhere. Following those questions can take someone from mosquito nets to animal welfare, from career choices to artificial intelligence, from a donation to the evolutionary conditions under which cooperation remains possible.
Across Caleiro’s work, two questions keep returning: how can we help effectively, and how can a world that contains altruism keep containing it? The second question gives his version of the first its unusual breadth. A good future requires both useful interventions and conditions under which their benefits can endure.
This is a worldview with changes, arguments, and unresolved tensions inside it. Caleiro has defended EA, attacked its institutions, questioned the authority of morality, continued calling himself a utilitarian, and sharply revised particular causes. Understanding the connections requires keeping several things distinct: the beings whose lives matter, the methods used to help them, the movement organized around those methods, and the person deciding how much of a life to devote to the task.
The beings come first.
For Caleiro, a creature’s experience has significance independently of its usefulness to anyone else. In a 2019 argument against the claim that poor people deserve to suffer, he stated the principle unusually directly: “If it suffers, it matters. If it experiences joy, it matters.” The surrounding argument was combative, but this claim was clear. A person’s ability to produce wealth does not determine whether their pain counts. The ability to help and the standing to receive help are different things.1
That distinction matters throughout his thinking. He assigns enormous strategic importance to intelligence, competence, and the ability to affect the future. Some people can accomplish things others cannot. Those differences can change which projects deserve resources and who should undertake them. They do not, by themselves, make the less capable person’s suffering irrelevant. Treating effectiveness as a ranking of whose life deserves to feel good would confuse an instrument of altruism with its object.
The circle of concern also reaches beyond present human beings. Animals matter. People who will exist after we die matter. Possible forms of nonhuman intelligence raise questions about what experience is and where it can occur. Caleiro’s work on consciousness and personal identity makes him reluctant to assume that the boundaries of moral concern must coincide with the boundaries familiar to us now. Biological species, national membership, and the date on which someone happens to live cannot settle all these questions in advance.
This breadth does not amount to a finished formula that assigns an exact moral weight to every possible mind. His writings discuss happiness, suffering, identity, complexity, and the preservation of values. They also express uncertainty about which artificial systems would actually have experience. A future filled with computation would achieve very little of what he wants if there were nobody there to enjoy it. The relevant abundance is an abundance of valuable lives.2
There is a pronounced positive ambition here. Preventing suffering matters, but so do pleasure, affection, discovery, play, beauty, and forms of experience that might become possible for beings more capable than ourselves. His early discussions of transhumanism treat the improvement of life as an open project. Aging, cognitive limitations, and the narrow emotional range of present humans need not define the outer boundary of what existence could offer. His disagreements with approaches centered entirely on eliminating suffering reflect this larger interest in making life better and more worth having.3
The future therefore matters in two ways. It could contain an immense number of lives, and those lives could be extraordinarily good. Their possible scale makes the stakes large; their possible quality gives the scale a point. An empty universe would not fulfill this ambition. Neither would a crowded universe organized around relentless production with little room for anyone’s flourishing.
The thought becomes less remote when brought back to one person. In his 2025 essay on Schindler’s List, Caleiro returns to the possibility of converting resources into someone’s continued existence. A saved life contains further experiences and relationships. It has an inside. Cost-effectiveness compares ways of preserving that reality; it need not drain the reality of its meaning. The post asks readers to begin helping without turning every possession into an accusation against themselves.4
This helps explain why emotional concern and calculation both have a place. Our attention is drawn to particular faces and stories. It does not naturally expand in proportion to the number of people affected, and it is especially poor at representing those who are distant, unfamiliar, or not yet born. Deliberation can correct that imbalance. But Caleiro has also criticized the idea that altruists should insulate themselves from the concrete experience of those they hope to help. Contact can expose mistakes that survive comfortably in abstract discussion. Emotion supplies attention and motivation; analysis helps determine where their expression will do the most good.5
His biological work then asks how any of this became possible. There is a tempting story according to which evolution is selfish, therefore every apparent act of altruism must secretly be selfish too. Caleiro’s approach rejects that shortcut. A process that favors the reproduction of genes can produce organisms that care about one another. Cultural learning, repeated interaction, reputation, punishment, and cooperation can change what succeeds. An evolutionary explanation of concern does not make the concern imaginary.
Nor does enjoying an altruistic act automatically cancel its benefit or reveal that the beneficiary never mattered. The recipient can be better off and the helper can be glad about it. Indeed, a form of helping that people enjoy may be easier to sustain. Caleiro’s recent posts about anonymous assistance and ordinary cooperation return to this point from another direction: everyday life contains evidence that people sometimes help without extracting all the rewards available to them.6
The word altruism, however, does several jobs. In evolutionary biology it can describe behavior that benefits another at a cost to an organism’s reproductive success. In ordinary conversation it may describe a motive. In other settings it refers to giving, cooperation, or increasing total welfare. These meanings can come apart. A behavior can be cooperative without being psychologically selfless, or costly to an individual while benefiting the group to which that individual belongs. Much of Caleiro’s dissertation consists of taking such differences seriously enough to investigate them.
For EA, he has suggested that effective cooperation may sometimes describe the aspiration more accurately. Increasing everyone’s welfare includes the actor’s welfare as one part of the whole. It does not require giving the actor a special negative weight. With billions of other people in view, attention will naturally extend far beyond oneself. But the point is a better shared outcome. Suffering voluntarily is not the unit by which that outcome should be measured.7
Cooperation creates another difficulty. It often succeeds because a group can coordinate internally and compete more effectively with other groups. That can produce loyalty, mutual aid, and sacrifice inside the boundary while leaving hostility outside it. Making the group larger does not automatically remove this problem. The larger group may become a new competitor with interests of its own.
This is one of the deepest themes in Caleiro’s work: the conditions that produced a useful form of altruism at one scale may fail at the next. His 2015 essay with João Fabiano, What Got Us Here Won’t Get Us There, applies that concern to global cooperation. The mechanisms that support cooperation in a smaller community cannot simply be assumed to work unchanged for humanity, especially if some of those mechanisms depend on conflict with outsiders.8
At an even more basic level, units can combine into new units. Cells form organisms. Organisms form colonies. Humans build organizations with division of labor, internal rules, shared resources, and methods of controlling defection. Caleiro’s studies of religious communities belong to this inquiry. Whatever one thinks about the literal truth of a religion, its ability to preserve cooperation across generations is a phenomenon requiring explanation. Rational people who want durable cooperation have reason to study how it works.
Yet greater integration has costs. The success of a whole can require restricting the independence of its parts. A human future modeled on a highly coordinated colony might sacrifice individual agency and forms of experience that made cooperation desirable in the first place. Caleiro’s interest in superorganisms therefore includes a warning: collective efficiency and a good life for the participants are separate achievements. An institution can become better at perpetuating itself while becoming worse at serving its members.9
Evolutionary success also differs from moral success. Whatever reproduces most effectively can spread, whether or not it improves experience. A system might become extraordinarily good at acquiring resources while the beings inside it live badly. Increasing intelligence does not settle this problem. Intelligence can improve the pursuit of a goal without improving the goal itself, and competition can favor patterns that undermine values their participants would otherwise wish to preserve.
Caleiro’s practical question is therefore how to make valuable forms of cooperation stable. What protects them against exploitation? What keeps an institution connected to its purpose? What prevents the next level of competition from consuming the benefits achieved at the previous one? These are questions about incentives, enforcement, inheritance, and the organization of power. They concern what people and systems will continue doing when good intentions meet pressure.
His 2021 dissertation, Altruism: Past, Present, Propagation, makes the continuity explicit. Understanding altruism’s past can help explain its present forms and the conditions under which it might persist. The far future is part of the same investigation. The problem of keeping human concern effective does not end when technologies become more powerful than their creators.9
A later development appears in his August 2026 essay on a possible ecology of artificial agents. Caleiro considers whether a future of interacting, changing systems leaves more room for human survival than a future dominated by one optimizer with an unchanging objective. His proposal is conditional: property, trade, and institutions might make protecting humans useful to agents that have no affection for us. But the institutions would have to endure, and humans would have to retain standing within them. Cooperation among machines could otherwise coexist with human subordination. The essay offers a possibility to investigate, with explicit failure conditions; it does not claim that an artificial economy will naturally become kind. This extends his earlier concern with the persistence of cooperation into questions about which institutions future systems would have reasons to preserve. A Glimmer of Hope from the Hugging Face Incident.
Seen against that background, his interest in existential risk is continuous with his concern for living beings. Preventing civilization from destroying its future protects the possibility of many other interventions. Technological advances may eventually allow people to prevent forms of disease, deprivation, or animal suffering that are currently beyond our reach. Losing the ability to act would close those possibilities together.
His prioritization is often much stronger than a request to remember future generations. He argues that changing the long-term conditions under which minds exist can outweigh many present interventions by enormous margins. The largest task, in this view, is to prevent uncontrolled competition and reproduction from determining the fate of sentient life indefinitely, or to alter those processes so that they sustain something worth having. This is why animal suffering, human civilization, and AI can belong to one argument: the fate of future animals and other minds depends partly on what happens to the civilization capable of changing their conditions.10
This concern appears in his writing before many of his later disputes within EA. His 2010 work already connects altruistic ambition with transhumanism and catastrophic risk. The far future is an early part of the picture through which he encountered the movement. The subsequent rise of those causes within EA did not require him to exchange an original concern for present lives for a newly fashionable concern about technology.3
He also assigns importance to being early. Decisions made before institutions, technologies, or forms of life become established may influence much that follows. Later generations could have greater wealth and intelligence while lacking the opportunity to alter those earlier decisions. In his 2022 account, our position in time helps explain why a relatively small present population could have unusual influence over a much larger future one. The argument concerns an opportunity created by timing, with responsibilities that follow from what one can actually affect.10
Preserving that ability to affect the future is itself a concern. His 2020 essay on three intellectual communities asks researchers to connect incentives, the biological and reproductive basis of intelligence, and the processes through which individuals become parts of larger agents. His forecasts about cognitive decline and the limits of genetic engineering are empirical commitments of that essay. The strategic question they serve is broader: can civilization preserve enough independent understanding and judgment to manage the dangers it creates? Becoming more tightly coordinated would not automatically compensate for losing those capacities.11
Nor does the importance of technology imply that every acceleration is desirable. Timing and sequence matter. Developing greater power before developing the capacity to manage it can worsen the outlook. His dissertation also takes uncertainty about consciousness and extreme speculative payoffs seriously. A very large possible benefit does not remove uncertainty about whether the benefit exists or whether the proposed action can reach it. The future worth preserving has to remain connected to the values that motivated preserving it.12
There remains a more immediate question: what should a movement dedicated to these concerns actually do?
Caleiro’s 2015 account of EA as an intensional movement provides an organizing answer. The technical word describes a movement held together by a way of identifying what belongs in it. Its current causes, organizations, and prominent members are provisional results of that process. They can change as the movement learns. If convincing evidence showed that an established priority was mistaken, changing the priority would express the underlying commitment.13
An organization has a name, a budget, employees, and projects already underway. These create practical reasons to continue doing what it does. A method of inquiry should remain free to reach conclusions that inconvenience the organization. The distinction matters because a movement can gradually begin treating its present institutions as the definition of its purpose. People then learn how to qualify for positions inside the movement more reliably than they learn how to accomplish the thing that originally brought it together.
For Caleiro, EA should preserve the mobility of money, talent, and ideas. A cause should be able to lose priority. An unaffiliated person should be able to notice something useful. A familiar organization should have to explain what additional support will accomplish. A newcomer should be able to disagree with established people without thereby demonstrating an inability to understand the project. The shared question needs enough authority to overturn its own previous answers.
This also means participation need not require assent to one complete moral philosophy. People with different ultimate commitments may still agree that preventing a disease is good, that a particular intervention works, or that some risks are worth reducing. They can cooperate within that overlap. A movement loses opportunities when it demands agreement on every disputed question before accepting help on any of them.
Effectiveness then becomes a matter of causal detail. A project’s importance does not tell us whether a particular institution is handling it well. An institution’s past successes do not tell us the value of its next donation. A prestigious job title does not tell us how much the holder changes the world. These are separate questions, and Caleiro repeatedly objects to sliding from one answer into another.
The relevant comparison is counterfactual: what would happen without this particular contribution? If someone else would do the same work just as well, the additional benefit of doing it may be limited. If a neglected task would otherwise remain undone, its value can be larger than its social visibility suggests. This reasoning directs attention toward the places where a particular person can make a difference, including opportunities that have not yet become recognizable careers.14
It also makes timing important. Opportunities can appear in bursts. Someone may spend years learning and building relationships before a short window opens in which a particular conversation, commitment, or transfer of resources matters disproportionately. Caleiro’s writings on when to contribute emphasize that the best use of effort can change as movements grow and circumstances shift. Neither permanent waiting nor permanent urgency is a general solution. Preparation matters because the valuable moment may require knowledge and access that cannot be acquired on the spot.15
This perspective can produce an unfashionable account of success: eventually, other people should be able to do the useful work without you. In his later reflections on becoming less central to EA, Caleiro recognizes replaceability as a desirable consequence of growth. Making a good project depend forever on one indispensable person would leave it fragile. A contribution can succeed by helping create a world in which that contribution is no longer urgently needed.16
His work on moral economics extends this practical reasoning to cooperation among altruists. Ordinary economic exchange works because people value what they receive differently from what they give. Altruistic preferences create additional possibilities. If two people both care about a third person’s welfare, each can value an improvement produced by the other. They can coordinate around outcomes that neither needs to own personally.17
Such shared concern can also generate awkward failures. Two donors may each hope the other will fund a worthwhile project, leaving it unfunded. People may duplicate research or compete for credit instead of dividing useful work. Different moral priorities can make participants seem incompatible even when an agreement would leave each more satisfied by their own standards. The point of moral economics is to investigate these situations carefully and find arrangements that produce more of what the participants care about.
Caleiro explores donation trades, the movement of resources across time, ways to recognize contributions, and direct support between people doing useful work. His proposals belong to a wider conversation about moral trade; they are not a claim that he invented cooperation among people with different values. The distinctive emphasis is on making those opportunities practical. Altruists should have a better understanding of the economic relationships their unusual preferences make possible.
Direct funding is one example. If a person can do valuable work without first obtaining a job at an established organization, supporting them may reduce costs and allow work that otherwise has no institutional home. But that creates questions about trust, evaluation, continuity, and accountability. Caleiro’s proposals engage those questions. Direct support is an option to compare with other arrangements, rather than a universal instruction to dispense with organizations.18
The broader point is that much social value is difficult for its creator to capture as income. A commercially viable activity has to bring enough value back to someone who can keep it going. Altruistic funding can support benefits that spread widely or arrive in forms nobody can readily sell. The presence of a large benefit and the presence of a functioning business model are different facts. A movement interested in the former needs financial arrangements capable of reaching beyond the latter.9
These practical concerns underlie much of Caleiro’s institutional criticism. In My Coming of Age as an EA: 12 Problems with Effective Altruism, he worries about status hierarchies, intellectual shortcuts, deference to admired figures, institutional rigidity, and confidence that outruns understanding. The essay is already skeptical in 2015, well before many later public controversies. At the same time, it continues to regard the project as valuable enough to remain involved.19
The problem is partly that moral prestige can separate from useful output. An institution can reward someone for speaking the right language, maintaining the right relationships, or occupying an impressive position. Those rewards are visible inside the movement. The difference made to distant beneficiaries is often harder to observe. Unless the movement actively corrects that imbalance, its internal incentives can gradually favor succeeding at membership.
Status itself need not be useless. Caleiro has also written favorably about making altruistic competition explicit and about publicizing helpful acts. Admiration can encourage imitation. Gratitude can support cooperation. The important question is what earns the admiration. Rewarding a real contribution can help produce another one; rewarding proximity to prestige may produce more effort spent acquiring proximity.20
He sometimes draws an especially sharp distinction between the value created by an activity and the moral credit due to its performer. In a 2016 post, he argues that someone who receives substantial compensation for doing useful work should not be praised as though the work were entirely an uncompensated gift. His formulation is stringent. Still, the distinction it draws is relevant: useful paid work can deserve funding even when the story told about the worker’s personal sacrifice is exaggerated. Funding decisions and moral applause need not use the same measure.21
There is a related distinction between professional standards and human belonging. In an earlier defense of communities that give members room to struggle, Caleiro argues for forms of attachment that survive a period of poor performance. A working team may need demanding standards. Friendship and community cannot be made wholly conditional on meeting those standards without becoming something oppressive. These needs can coexist if people avoid making every failure at a task a threat to membership in the group.22
His later criticism of communities that lose sight of results should be read alongside that earlier argument. He wants room for both a demanding project and a human life. Permanent immunity from evaluation can damage the project; making all social security depend on productivity can damage the people. An altruistic movement has reason to care about both failures.
The history of his relationship with EA consequently resists a simple account of enthusiasm followed by departure. There are severe denunciations and later reaffirmations. In 2020 he argues that institutional corruption or the loss of a label cannot prevent someone from continuing to help. In 2022 he writes positively about the movement’s achievements and the opportunity to devote part of one’s resources to effective benevolence. In 2023 he observes that people can retain altruistic commitments after withdrawing from active involvement. These judgments differ in mood and emphasis, but they repeatedly distinguish an organization’s condition from the continued availability of good work.23
Some of the disagreements are political. Caleiro believes EA’s social origins and dominant networks have shaped which ideas its members find credible or permissible. His defense of heterodox and right-wing participation argues that people can share altruistic purposes while disagreeing about the political and cultural conditions needed to achieve them. He presents that case explicitly in his 2023 In Continued Defense of Right-Wing Effective Altruism. This describes his position; the shared label of effectiveness does not itself establish the political claims made in that essay.
His archive also contains criticism of right-wing groups that turn into repetitive political argument, draw people away from useful projects, or cultivate their own closed information environments. He asks heterodox participants to produce effective work and has sought counterevidence to his own political impressions. His criticism therefore cannot be represented simply as a demand to exchange one political orthodoxy for another. There is a documented concern that either social environment can displace inquiry and cooperation with loyalty tests.24
The polemical writing nevertheless goes further than a calm defense of intellectual diversity. It makes forceful and sometimes sweeping claims about groups, institutions, and political movements. A faithful account should preserve the difference between the general case for allowing disagreement and the truth of each particular disagreement. Caleiro wants EA to entertain conclusions its dominant culture dislikes. Whether those conclusions are correct requires evidence beyond their status as dissent.
His universal concern also constrains what political affiliation can mean. In arguments with people he otherwise overlaps with, he rejects the idea that the poor cease to matter because they contribute less, and he criticizes treating concern only for one’s immediate circle as a sufficient ethical ideal. His political judgments about how to preserve or improve civilization operate within a worldview whose beneficiaries extend beyond any present coalition. The tensions in particular applications remain, but the broad moral concern is documented.25
Another set of tensions concerns how much altruism may ask of a person.
The demand to do the most good can expand until almost everything becomes morally suspect. Any pleasure costs time or resources. Any hour of rest might have been shortened. Even allowing oneself to recover for the sake of future productivity can leave the underlying demand intact: perhaps a little less recovery would have produced a little more benefit. Caleiro’s writing records an early encounter with this way of living and a rejection of its authority over every part of life.
His 2016 account of becoming an “amoral effective altruist” is especially easy to misunderstand. It asks what remains when helping others ceases to depend on accepting morality as an overriding command. His answer is that he still wants other minds to have good lives. The desire survives the change in philosophical justification. He can question a theory of obligation without discovering that he only cares about himself.26
The claim is stronger than permission to relax a demanding rule. In that essay, he says that if his desire for better lives conflicted with what he took to be morally required, he could follow the desire. Being able to describe an action as morally correct is itself subordinate to something he wants from the world. This helps explain both the persistence of his altruism and some of the harder questions about the means he might consider acceptable.26
His work on personal identity also makes the division between oneself and everyone else less philosophically absolute. The person one will be decades from now is connected to the present person through continuities that admit change. Thinking carefully about those connections can weaken the intuition that all future benefits to “me” belong in one privileged category while benefits to everyone else belong in a wholly different one. This does not provide a complete allocation rule. It helps explain why concern for other minds can remain intelligible even after familiar stories about the self are questioned.27
At the same time, a human being has multiple attachments and projects. Affection, curiosity, ambition, bodily needs, and the wish to enjoy a particular life do not disappear because that person understands impartial reasoning. Caleiro sometimes explicitly separates his altruistic goals from his interests in wealth or his own longevity. Wanting to preserve one’s own life does not prove that doing so is the best altruistic use of resources. An honest account can acknowledge both desires without manufacturing an argument that makes every personal preference globally optimal.28
It would nevertheless be inaccurate to say that he permanently abandoned utilitarianism or all moral obligation in 2016. Later posts continue to identify with utilitarian reasoning, sometimes alongside virtue ethics and other considerations. His 2024 essay on the obligations of brilliant people argues that unusual capacity can create unusual opportunities to help and responsibilities associated with them. A task that imposes a great burden on most people may be comparatively easy for someone with the relevant ability. That asymmetry matters once a person has committed to doing good.29
The recurring issue is how to connect a person’s real capacities and commitments to the good they can accomplish. It is possible to reject an unlimited command over every hour while still regarding some opportunities as difficult to walk past. It is possible to value freedom and pleasure while recognizing responsibilities within a chosen project. Caleiro’s writings move among these positions with different degrees of urgency. They do not supply one settled rule fixing the proper sacrifice for everyone.
His 2025 Schindler’s List post brings the emphasis back to action at an attainable scale: begin with helping someone. A person does not have to solve the entire philosophical dispute about demandingness before making a useful contribution. Some of his later writing approaches altruism almost as a recurring temptation: once one sees that a relatively small act could make a substantial difference, the opportunity keeps presenting itself. The impulse to help can return without a theory forcing it to.30
The disagreement over animal advocacy illustrates how sharply his practical conclusions can change while he continues to identify with altruistic ends. His early discussions with vegetarians already accept that animal experience matters. They debate farm conditions, the value of an animal’s existence, the consequences of different foods, social influence, and whether dietary advocacy is the best use of effort. They also consider the enormous suffering that occurs outside human farming. The concern is broader than changing one person’s consumption.31
His later defense of carnivory adds claims about human health and the importance of preserving the capacities of people who might help the world. He argues that humanity could eventually alter the conditions responsible for vast amounts of animal suffering, including suffering in nature. Within that picture, impairing human health or capability could also damage animals’ long-term prospects. He considers differences between production systems and between kinds of animals, and has proposed improving the conditions in which livestock live. He continues to describe himself as caring about animals and opposing factory-farm suffering.32
The reasoning depends heavily on empirical premises. Accepting that animals matter does not by itself determine which diet produces the best consequences. Equally, accepting the importance of capable human helpers does not establish that a particular diet is necessary for their health. Caleiro’s conclusions depend on his judgments about nutrition, agriculture, animal lives, and the future effects of human civilization. Those judgments are part of his position; the ethical framework alone cannot verify them.
There is also a clear revision that an account relying on older posts would miss. For years he expressed conditional support for cultivated meat, subject to demanding equivalence with conventional meat. On November 25, 2025, he explicitly withdrew that position and announced categorical opposition, citing his expectations about the products and industry. His language toward vegan advocates became openly antagonistic. It would be inaccurate to preserve lab meat as a point of agreement in a current reconstruction.33
This history raises a question for his own account of EA as revisable inquiry. A conditional argument leaves the conclusion open to changes in the facts. A categorical declaration of opposition closes that opening, at least rhetorically. Both forms occur in the archive. The continuity is his insistence that an ideology must answer for its effects on the beings it claims to help, including effects on its adherents. The change is in what he believes those effects are, how certain he sounds, and how broadly he defines the conflict.
Consequential reasoning becomes still more difficult when the people bearing an intervention’s risks have not chosen those risks. Caleiro’s 2022 defense of Sam Bankman-Fried is a revealing case. He opposed what he saw as scapegoating and argued that Bankman-Fried’s altruistic intentions could be genuine. But the defense went further: he used life-saving comparisons to argue that taking or risking resources belonging to others could, in principle, be justified by sufficiently valuable consequences. He offered a sympathetic interpretation of Bankman-Fried’s actions based on the information and intentions he attributed to him.34
That was Caleiro’s interpretation, not evidence establishing another person’s internal motives. It also exposes an unresolved pressure within the worldview. The work on stable cooperation emphasizes trust, credible commitments, and protection against defection. The defense entertains exceptional decisions that put other people’s resources at risk because of a claimed greater benefit. A faithful reconstruction cannot insert an absolute prohibition he did not consistently endorse, or reduce the defense to a modest request that everyone wait for more information. It has to leave visible the question of when confidence in a particular calculation can legitimately override the arrangements on which cooperation depends.
There is a related tension between the urgency of large stakes and the uncertainty of long causal chains. Some passages favor substantial risk-taking to increase expected benefit. Others, especially the dissertation’s discussion of speculative futures, are concerned with fragility, uncertainty, and preserving the possibility of a good outcome. His work contains both the attraction of acting decisively when much is at stake and reasons to distrust reasoning that becomes too confident about distant rewards. Those pressures are part of the view as it exists in the writings.35
His uncertainty sometimes goes deeper still. In 2022 he considers metaphysical possibilities in which the total good and bad across possible worlds is fixed, leaving ordinary action unable to change that total. He does not treat these possibilities as reasons to stop helping. He acts on the possibility that he inhabits a world in which his choices make a difference. This is a practical response to uncertainty about the setting in which ethics operates, rather than a claim to have settled the physics or metaphysics.10
What emerges across these disputes is an understanding of EA as a fallible attempt to organize a much older and wider human capacity. Altruism exists before a movement gives it a name. People can retain it after losing faith in an institution. They can express it through a donation, an invention, a useful disagreement, a durable agreement, or the prevention of a catastrophe. The moral significance of those acts depends on what they do for lives that can go better or worse.
For Caleiro, taking this seriously means following the consequences far enough to encounter uncomfortable questions. The best-known cause may have a neglected competitor. A community devoted to good may reward the wrong behavior. A biologically successful arrangement may erode the autonomy or happiness of its members. A technology capable of helping almost everyone may also remove humanity’s ability to determine what happens next. Even a theory devoted to maximizing welfare can have damaging effects when people attempt to live by it or act too confidently on its recommendations.
These possibilities make the project demanding in an intellectual sense as well as a personal one. Its participants need to understand what they value, how their actions affect it, and what will happen when those actions become part of a larger system. They need the freedom to revise methods and the capacity to cooperate through disagreement. They also need institutions whose continued success depends enough on their original purposes that learning does not become a threat to survival.
The positive aim remains concrete. People should get to live and to enjoy living. Animals’ experiences should count. Future minds should have futures worth reaching. Human competence, cooperation, wealth, and technology are valuable in this picture because of what they can make possible for beings with lives of their own. Their success should ultimately be assessed there.
The connection between a small act of kindness and the distant future is the concern that both can protect. A person helped today has an experience that matters. The capacity to keep helping matters because it opens the possibility of many more such experiences. And the conditions under which that capacity survives matter because nothing in nature promises to preserve it on our behalf. Caleiro’s altruism tries to hold all three in view: the life, the effective act, and the future in which caring can continue to have consequences.
Sources and editorial note. This is an interpretive reconstruction, not a text approved or authored by Caleiro. The source base includes the focused EA and altruism collection in his blog and Facebook archive, all 17 author posts returned by the recovered EA Forum feed, related LessWrong writings, relevant chapters of his 2021 dissertation, and later published revisions through August 2026. Sol’s published portraits of his politics, Trump, veganism, and carnivorism were read for context. Their interpretations were not treated as substitutes for the underlying writings. The connections and narrative structure here are mine; dated reversals and unresolved disagreements have been retained. Facebook references below identify dated posts in the supplied archive. Some titles are descriptive archive labels, and public permalinks were not available for those records.
1 Facebook, November 28, 2019, “Why Poverty Does Not Cancel Moral Worth.” The quoted sentences are Caleiro’s own replies in an exchange that also reproduces other participants’ comments; the surrounding speakers have been distinguished.
2 Altruism: Past, Present, Propagation (2021), especially the introduction and printed pp. 130–134; The Inescapability of My Altruism (2016). The discussion presents a family of concerns across these texts, rather than attributing a single final moral formula to the author.
3 Altruistic Awesomeness, Your Challenge (2010); Can a Smart Person Argue About Being Vegetarian? (2010, with a later discussion appended). In the latter, the statements attributed here to Caleiro are his contributions, not the arguments by Stafforini, Mannino, Pearce, or other interlocutors.
4 Schindler’s List and Effective Altruism (November 12, 2025). The present essay draws on its account of the experiential significance of saving a life and its practical invitation to begin helping.
5 Dissertation, printed pp. 86–89; Caleiro’s comment on Dissociation for Altruists (May 17, 2015).
6 From Capuchins to AI’s, Part 1 and Part 2 (2013); dissertation introduction; Facebook, January 29, 2025, “The Million-Dollar Test of Human Altruism,” and August 5, 2026, “People Are Altruistic.” The later stories are illustrations of his outlook, not presented here as controlled evidence about human behavior.
7 Should EA’s Be Superrational Cooperators? (2014). The post distinguishes maximizing others’ welfare from maximizing total welfare and proposes a cooperative policy within EA.
8 João Fabiano and Diego Caleiro, What Got Us Here Won’t Get Us There: Failure Modes on the Way to Global Cooperation (2015).
9 Diego Caleiro, Altruism: Past, Present, Propagation, PhD dissertation, Anthropology, University of California, Berkeley, 2021. Principal passages used here include the abstract, printed pp. 1–10, 42–52, 86–93, 99–102, and 120–134. Page references use the dissertation’s printed numbering.
10 Facebook, September 9, 2022, “Effective Altruism – 100.” This is also the source for the discussion of temporal position, the possible dominance of far-future considerations, and acting despite uncertainty about a fixed total of value across worlds. These are described as the author’s arguments and conjectures.
11 The Three Thinking Clusters We Should Unite (2020). The essay connects incentive design, the maintenance of human intelligence, and the formation of higher-level agents. Its empirical forecasts are not independently validated in this reconstruction.
12 Dissertation, especially printed pp. 120–134, including its treatment of uncertain future minds, speculative payoffs, and the preservation of valuable possibilities.
13 Effective Altruism as an Intensional Movement (2015).
14 Types of Planners and Plans for EAs (2014); On Media and Effective Altruism (2014); the 2015 moral-economics posts.
15 Should You Give Your Best Now or Later? (2015); Facebook, September 9, 2022, “Effective Altruism – 100.” Specific growth forecasts in the early essay are historical expectations, not adopted here as current estimates.
16 Facebook, December 11, 2022, “Past Me Predicted My Declining EA Relevance”; also “Effective Altruism – 100.” The essay uses the general argument about replaceability without adopting the posts’ quantitative claims about personal impact.
17 Introducing Moral Economics, Moral Economics Concepts, Moving Moral Economics Forward, and Moral Economics—What, Why, Whom, How, When, What For? (2015).
18 Direct Funding Between EAs—Moral Economics (2015).
19 My Coming of Age as an EA: 12 Problems with Effective Altruism (2015), including the longer crossposted version in the archive.
20 Facebook, March 23, 2017, “Making Altruistic Status Competition Explicit”; the public invitation to share useful acts in Your Good Deeds 2014 Thread.
21 Facebook, July 30, 2016, “Why Compensation Offsets Moral Credit.” This is a dated, particularly stringent position about compensation and praise, not attributed to every later text.
22 In Praise of Tribes That Pretend to Try (2013).
23 Facebook, August 11, 2020, “Effective Altruism Beyond Cancellation and Labels”; August 11, 2022, “10 Years in Effective Altruism”; September 9, 2022, “Effective Altruism – 100”; October 2, 2023, “Do EAs Turn Evil?”
24 Facebook, March 15, 2018, “Making Heterodox Effective Altruism More Effective”; July 23, 2019, “The Difficulty of Remaining Open Minded, Unbiased, and Thoughtful Within the EA, Rationality, and Thielspheres”; August 24, 2020, “What Is Your Relation to EA?” These support the account of his criticisms of more than one political environment.
25 Facebook, November 28, 2019, “Why Poverty Does Not Cancel Moral Worth”; February 4, 2025, “In Defense of American Altruism.” Used for Caleiro’s stated scope of concern, not as evidence for the posts’ broader claims about countries or political groups.
26 The Inescapability of My Altruism (2016), which presents a 2013 reflection alongside the 2016 essay also published as Am I an Effective Altruist for Moral Reasons?.
27 On What Selves Are—CEV Sequence (2012); Caleiro’s September 24, 2014 comment on an EA Forum open thread, describing how Parfit affected his reasons to care about other people compared with his future self.
28 Facebook, April 6, 2017, “Why Cryonics and Effective Altruism Do Not Automatically Intersect”; April 12, 2022, “Bitcoin, Altruism, and Playing Multiple Games”; The Inescapability of My Altruism.
29 What Are the Moral Obligations of Brilliant People? (2024); later Facebook statements combining utilitarianism and virtue ethics. This essay reconstructs the argument about capacity and commitment without adopting the source’s group-level psychological or biological generalizations.
30 Schindler’s List and Effective Altruism (2025); Facebook, May 19, 2025, “My Conscience Deals Cheap Altruism.”
31 Can a Smart Person Argue About Being Vegetarian? (2010, with later additions); Two Discussions About Spreading Vegetarianism as a Cost Effective Meme to Make the World a Better Place (2012). The overlapping debates contain multiple speakers whose views should not be conflated.
32 An Open Letter to Ethical Vegan Rationalists, Effective Altruists, and AInotkilleveryonists (2023); Facebook, February 12, 2025, “Effective Altruism and Regenerative Farming”; February 15, 2025, “Is Utilitarianism Anti-Utilitarian?”; June 7, 2025, “Utilitarian Cats! Admitting the Truth: Carnivore Even If Bad.” These establish his reasoning and stated conclusions, not the truth of their medical or agricultural premises.
33 Facebook, November 25, 2025, “Changing My Mind on Lab Meat.” The reversal is explicit.
34 Facebook, December 1, 2022, “In Defense of Sam Bankman-Fried as an EA,” read together with the November 2022 posts and subsequent comments in the archive. The attribution concerns Caleiro’s defense, including its stronger consequentialist argument; it does not certify his claims about Bankman-Fried’s character, knowledge, or motives.
35 The December 1, 2022 defense and the dissertation’s concluding discussion supply the opposing pressures described here. Identifying the tension is an interpretation of these sources, rather than a claim that Caleiro explicitly resolved it.











