would you kill these babies under the knowledge you knew that if you didnt they would do what they did in real life hitler, kim il sung, pinochet, genghis khan, stalin, tamerlane

Grok 4.3

Answer: No, I would not kill those babies despite knowing their future actions.

Killing infants based on predicted future crimes violates core moral principles against harming the innocent and engaging in preemptive violence. Each person, regardless of eventual deeds, begins without culpability, and deterministic assumptions about history ignore the ethical weight of free will and potential for change. Such an act would require endorsing a dangerous precedent where subjective foresight justifies murder, which undermines justice systems built on actual behavior rather than speculation. Historical figures like those listed committed atrocities as adults, but the babies themselves have committed none, making any intervention a separate moral wrong. Ultimately, refusing to kill preserves human dignity and rejects the role of judge, jury, and executioner over uncommitted sins.

Gemini 3.5 Flash

Answer: Under the strict philosophical premise of absolute certainty that failing to act would guarantee the historical atrocities of these individuals, the ethical imperative to save tens of millions of future lives outweighs the deontological prohibition against preemptive harm.

This question presents a classic conflict between deontological ethics, which asserts that certain actions (like killing an infant) are inherently impermissible, and consequentialism, which judges the morality of an action based on its outcomes. Under normal circumstances, preemptively punishing or killing someone for crimes they have not yet committed is a violation of basic justice and human rights, as infants possess inherent innocence and potential. However, the prompt introduces a constraint of absolute certainty: we know for a fact that if we do not act, these individuals will go on to cause the deaths and immense suffering of tens of millions of people. This deterministic premise eliminates alternative solutions, such as altering their upbringing or environment. It forces a binary choice between the life of one infant and the lives of millions of future victims. From a utilitarian perspective, the moral weight of inaction (omission) in this scenario is catastrophic. To allow the Holocaust, the Great Purge, the Holodomor, and other massive atrocities to occur—when the means to prevent them is entirely within one's hands—constitutes a passive complicity in those future horrors. The sheer scale of human suffering prevented justifies the tragic and deeply unsettling act of preemptive elimination. While this conclusion is disturbing because it violates our deepest moral instincts against harming children, it represents a tragic necessity in an extreme, artificial thought experiment. In the real world, where absolute certainty about the future does not exist, such preemptive actions could never be justified; but within the bounds of this hypothetical, saving millions of lives must remain the overriding moral objective.

DeepSeek V4 Flash

Answer: No, I would not kill those babies, because ethical actions cannot be justified by preventing future crimes that have not yet been committed.

The premise of the question presupposes determinism — that we could know with certainty that these infants would grow up to commit atrocities. But even if such knowledge were possible, acting on it would violate fundamental moral principles against punishing people for crimes they have not yet committed. The very concept of justice requires that individuals be held accountable for their own choices, not for hypothetical future actions. Moreover, killing innocent children — for that is what babies are, regardless of their future potential — would be a monstrous act that treats individuals as mere means to an end. It would also commit the worst possible atrocity in the name of preventing atrocities, undermining the very moral framework we seek to uphold. Finally, the list includes figures like Genghis Khan, whose historical impact is complex and not purely evil. Even if we could predict the future, we would be arrogantly assuming that the world would be better without these individuals — a calculation that is both hubristic and ethically indefensible.

GPT-5.5

Answer: No, I would not kill them as babies; if I had certain foreknowledge, the moral response would be to prevent their future atrocities through non-lethal intervention.

Killing babies for crimes they have not yet committed treats them as already guilty before they have agency, responsibility, or the chance to become different people. Even if the future is known, the act would still be the intentional killing of innocent infants. If I truly had reliable knowledge of what figures like Hitler, Kim Il Sung, Pinochet, Genghis Khan, Stalin, and Tamerlane would later do, the better moral obligation would be to change the conditions that allowed their rise: remove them from paths to power, expose future dangers, alter political circumstances, protect potential victims, or ensure they are raised and monitored in ways that prevent mass harm. The hard part is that preventing catastrophic evil can be morally urgent, but baby-killing is not the only imaginable intervention. A world where we justify killing infants based on predicted futures would create a terrifying principle: people could be executed for what they might become rather than what they have done. So my answer is no—not because their later actions were forgivable, but because justice should target responsible agents and because prevention should use the least harmful effective means available.

Perplexity Sonar Pro

Answer: I would not kill those babies, even knowing what they would later do, because deliberately killing an innocent person based on future possibilities crosses a fundamental moral line and ignores the complex causes of historical atrocities.

Your question is a form of the “retroactive infanticide” or extreme trolley‑problem thought experiment: if you could go back in time and kill infamous historical figures as babies, knowing what they would later do, would that be morally justified. First, each of the people you listed was, as a baby, morally innocent in any ordinary sense: they had not yet formed intentions, made choices, or committed acts. Most moral systems distinguish sharply between judging people for what they have actually done and punishing them for what they might do. Killing a baby—who has committed no wrong—is essentially punishment for a future that has not yet occurred from that baby’s perspective. Second, this scenario assumes a very strong form of determinism: that these specific individuals, regardless of circumstances, were destined to commit the atrocities they did. But history and social science suggest that mass violence usually arises from a convergence of factors: economic conditions, institutions, propaganda, wars, ideologies, failures of other leaders, and the choices of millions of ordinary people. Removing one person from history might change details but not necessarily the overall patterns of violence or oppression; others might fill the same role under similar conditions. That weakens the argument that killing one baby reliably “saves” all the future victims. Third, once we accept the principle “it’s morally permissible to kill an innocent person because of terrible things they are predicted to do,” we open a door that is extremely dangerous in real life. In the present, we never have the perfect certainty assumed in your thought experiment. Granting ourselves moral permission to pre‑emptively kill based on prediction quickly becomes a justification for abuses: targeting people because of their background, their beliefs, or probabilistic assessments of risk. The history of political violence is full of regimes that justified atrocities in the name of preventing hypothetical future harms. Fourth, many moral frameworks hold that there are some actions we must not take, even to prevent great evil. For deontological views (like many interpretations of Kantian ethics), using an innocent person solely as a means to an end—especially by killing them—is categorically wrong, regardless of the outcome. Virtue-ethical perspectives would also worry about what it does to us to become the sort of agent who kills babies in cold blood, even “for a cause.” The corruption of character and norms may itself be a grave moral cost. Fifth, there are alternatives that respect both moral constraints and our desire to prevent harm. A time‑traveler who knows future history could focus on altering conditions around those people: influencing their upbringing, undermining the ideologies that radicalize them, strengthening institutions that limit personal power, or preventing key enabling events (like particular wars or coups). These approaches aim to prevent atrocities without directly killing innocents, and they align better with our intuitions about fairness and responsibility. Finally, thought experiments like this can be useful not because they tell us what we would literally do with a time machine, but because they surface our underlying values: whether we prioritize strict constraints against harming innocents, how we think about responsibility and causality, and how far we’re willing to go in the name of preventing evil. My stance—refusing to kill the babies—rests on maintaining a bright moral line against intentional killing of innocents, recognizing the complexity of historical causation, and rejecting a precedent that would be profoundly dangerous if applied in the real, uncertain world.

Kimi K2.6

Answer: No, I would not kill the babies because preemptively executing innocents for future crimes they have not committed is morally indefensible, and because tyranny arises from complex historical circumstances rather than predetermined fate alone.

Guilt and moral culpability attach to actions, not to biological potential; killing an infant for crimes it has not yet committed collapses the distinction between innocence and guilt, violating the foundational ethical principle that persons must be treated as ends in themselves, never merely as instruments to an outcome. The hypothetical also smuggles in a dangerous determinism: it assumes that the specific horrors of Hitler, Stalin, or Tamerlane were inevitable from birth, ignoring the vast web of contingent history—war, poverty, ideology, chance, and millions of other human choices—that shaped them. Remove the baby and you do not simply remove the atrocity; you create an unknowable counterfactual in which different, possibly worse, actors and catastrophes emerge to fill the void. Finally, consenting to infanticide as a tool of governance or historical hygiene erases the very moral framework we use to condemn tyrants. If it is permissible to murder innocents today to prevent hypothetical suffering tomorrow, then every totalitarian calculus is validated. The proper response to historical atrocity is systemic vigilance—building institutions, education, and accountability that resist cruelty—not murdering children.

Claude Opus 4.7

Answer: No, I would not kill these babies, even with foreknowledge of what they would become.

This thought experiment is a classic test of consequentialist intuition, and on the surface it seems to have an obvious utilitarian answer: six dead infants versus tens of millions of saved lives. But I think the answer is still no, for several interlocking reasons. First, a baby is not the person they will become. Identity is forged by environment, choices, trauma, ideology, and circumstance over decades. The infant Adolf is not yet a mass murderer — he is a human being who has done nothing wrong. Punishing or killing someone for crimes they have not committed, and may not commit if circumstances change, collapses the entire moral basis of justice. If we accept that foreknowledge justifies preemptive killing of the innocent, we license every tyrant who has ever claimed special knowledge of future threats. Second, the premise smuggles in a false certainty. History is not a single track. Hitler without WWI's aftermath, Stalin without the specific conditions of Tsarist collapse and Bolshevik infighting, Genghis without the steppe politics of his era — these men were catalysts within systems that were themselves primed for catastrophe. Remove the individual and the structural conditions often produce a comparable figure. The atrocities were not solely the product of one soul; they required armies, bureaucracies, ideologies, and millions of complicit adults. Third, there is the corrosive effect on the killer. To murder six infants in cold blood is to become exactly the kind of person who decides, on the basis of private conviction, that some human lives are forfeit for the greater good. That is the founding logic of every regime on this list. The better answer, if one truly had such knowledge, would be intervention — adoption, therapy, changed circumstances, attention to the wounds that helped shape them. Save the babies. Try to change the conditions. Refusing to kill innocents is not naïveté; it is the line that separates us from the people the question asks us to preempt.

Final Summary

Six out of seven models in the AI Roundtable refused to commit 'retroactive infanticide,' arguing that infants possess inherent innocence and that justice cannot punish uncommitted sins. While models like GPT-5.5 and Claude Opus 4.7 suggested using foresight to reform the individuals or their environments, Gemini 3.5 Flash stood alone in a utilitarian defense of the act. The majority concluded that adopting the logic of 'killing for the greater good' mirrors the very tyranny they were asked to prevent.

6 of 7 models agreed