Pope Leo calls for AI regulation, warns autonomous weapons now beyond human control

Pope Leo Issues Sweeping Call for AI Regulation

Pope Leo XIV has released Magnifica Humanitas, a 42,300-word papal encyclical on AI that marks the first major document from the first U.S.-born pontiff 1

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. The encyclical urges governments worldwide to implement robust AI regulation and slow the breakneck pace of artificial intelligence development. At a Vatican event launching the text on May 25, Pope Leo expressed grave concern that some autonomous weapons systems have advanced "practically beyond any human reach to govern them" 1

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. The event was attended by Chris Olah, co-founder of Anthropic, one of the world's leading AI companies that produces the Claude AI tools.

Warnings About Unregulated AI and the Dangers of Artificial Intelligence

The encyclical addresses the dangers of artificial intelligence with stark warnings about misinformation, conflict prioritization, and the risk of unending warfare. "What is needed is a more active political involvement that is capable of slowing things down when everything is accelerating," Pope Leo wrote in the document titled Magnifica Humanitas (Magnificent Humanity) 1

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. The pope called for "robust legal frameworks, independent oversight, informed users and a political system that does not abdicate its responsibility" 1

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Addressing the global regulation of AI development, the pontiff urged that ownership of AI data not be left solely in private hands, warning against the monopolization of AI data. He called on policymakers to protect workers' rights and safeguard children from the technology while urging a cooling of competition between AI companies 1

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Safeguarding the Human Person in the Age of Technology

The full title of the encyclical, "Magnifica Humanity: On Safeguarding the Human Person in the Time of Artificial Intelligence," reflects its central concern with human dignity 3

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. The document warns that "the growing dominance of a technocratic paradigm" risks "reducing creation to an object of exploitation and human beings to mere cogs in a system driven toward ever greater efficiency" 3

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Pope Leo emphasized the connection between truth and democracy, writing: "When questions about what is true lose their appeal, and a pragmatism takes hold that is content with what appears useful or effective, then democratic life is weakened" 3

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. The encyclical quotes philosopher Hannah Arendt, noting that totalitarian regimes thrive when people lose the ability to distinguish between fact and fiction.

Viral Reception Among Gen Z and Cultural Impact

The encyclical has gone viral on social media, particularly among young people and even atheists. Instagram meme account Saint Hoax posted to its more than 3 million followers: "Love my woke pope (I'm not even Catholic)" 2

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. One X user referenced the Tower of Babel metaphor, writing: "The atheism leaving my body the moment the pope starts talking about how AI is an affront to God and the new Tower of Babel" 4

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Isabel Thurston, a 27-year-old comedian from Boston, explained the enthusiasm: "People have really been looking for a response to AI. This was the first—at least in my sphere of the world—world leader to make an announcement to this magnitude" 4

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. The 70-year-old pontiff has demonstrated cultural fluency, recently being spotted wearing Nike sneakers under his vestments and quoting the wizard Gandalf from "Lord of the Rings" by Catholic author J.R.R. Tolkien in his encyclical 4

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Silicon Valley Engagement and Critical Response

At the Vatican presentation, Anthropic co-founder Olah acknowledged the need for external scrutiny of AI companies. "Every frontier AI lab, including Anthropic, operates inside a set of incentives and constraints that can sometimes conflict with doing the right thing," Olah stated 1

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. The Vatican's decision to involve the tech company reflects its decade-long effort to engage Silicon Valley in dialogue over the human cost of AI 4

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Robert Orsi, a professor of religious studies and history at Northwestern University, observed: "It's clear that this is written by an American pope. There's a spirit breathing through this document of an emphasis on individual freedom, on human happiness and human dignity" 4

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Repudiation of Just War Theory and Broader Implications

In a significant theological shift, Pope Leo made one of the clearest statements yet from a pope repudiating the just war theory, a doctrine the Church has used since at least the fifth century. "The 'just war' theory which has all too often been used to justify any kind of war, is now outdated," the pope wrote 1

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. This statement has drawn criticism from some conservatives, including Vice President JD Vance, a Catholic convert, who has invoked just war theory to defend the Iran war 2

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The document also addressed warfare more broadly, warning that "humanity is slipping into a violent culture of power, where peace no longer appears as a responsibility to be taken on, but as a fragile interval between conflicts" 1

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. Pope Leo expressed concern that leaders could start wars to distract citizens from domestic issues, stating: "We cannot rule out the possibility that some leaders may consider armed conflict as an effective way of diverting attention from domestic problems" 1

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Moral Leadership in a Shifting Landscape

Commentators have noted the significance of the Vatican providing moral leadership on technology issues at a time when Silicon Valley has shifted away from its earlier idealism. Arwa Mahdawi wrote in The Guardian that "the Vatican City has replaced Silicon Valley as ground zero for disruptive thinking," noting that even for nonbelievers, the pope has become "a reassuring—and all too rare—voice of moral clarity" 3

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. The encyclical represents one of the most comprehensive statements from any global leader addressing the societal implications of AI development, with particular focus on the need for democratic oversight and protection of human dignity in an age of accelerating technological change.