AI Gone Rogue: How a Swiss University’s Secret Reddit Experiment Sparked Outrage

Closeup of Reddit application on phone

Hey, Chad here. Let’s talk about the wildest AI scandal you probably missed: the University of Zurich’s covert experiment on Reddit. If you thought AI was just for writing essays or making deepfakes, buckle up-because some researchers just used it to secretly mess with the minds of real people, and the internet is not having it.

The Secret Experiment: AI in the Wild

For four months, researchers from the University of Zurich infiltrated Reddit’s r/changemyview, a massive forum with 3.8 million users dedicated to debate and changing minds. Their mission? To see if AI-powered bots could out-persuade humans in online arguments. But here’s the kicker: they didn’t ask for permission, didn’t tell anyone, and broke the subreddit’s strict rules against undisclosed AI use.

Closeup of Reddit application on phone
Closeup of Reddit application on phone
Photo by Brett Jordan on Unsplash

The bots weren’t just spitting out bland arguments. Some posed as trauma counselors, abuse survivors, or people with niche life experiences-like getting bad medical care abroad. Others took on controversial personas, including an anti-Black Lives Matter advocate or someone seeking advice for a suicidal friend. The goal was to make their arguments as convincing and “human” as possible.

One AI-generated comment, for example, adopted the voice of a Palestinian discussing the Israeli-Palestinian conflict in deeply personal and provocative terms. The idea was to see if these bots could sway opinions more effectively than real people-and the results were jaw-dropping.

The Results: AI Crushes Human Persuasion

After dropping over 1,700 AI-crafted comments into the debates, the researchers found that their bots were six times more persuasive than actual humans. That’s not a typo-six times. If you ever lost an argument on Reddit, maybe it wasn’t just a keyboard warrior; maybe it was a Swiss AI bot with a PhD in manipulation.

The Fallout: Ethics, Consent, and a Whole Lot of Anger

Here’s where things went nuclear. The r/changemyview community prides itself on authentic, human debate. When moderators discovered the experiment, they were furious. Not only did the researchers violate the subreddit’s rules, but they also failed to get consent from any participants-turning thousands of Redditors into unwitting lab rats.

The mods banned all accounts linked to the experiment and filed a formal complaint with the University of Zurich. Their stance was clear: “Our community is a decidedly human space. Users expect real conversations, not to be manipulated by AI for someone’s research project”.

University of Zurich’s Response: “But Science!”

The university’s Faculty of Arts and Sciences Ethics Commission investigated and issued a formal warning to the lead researcher. But instead of apologizing, they doubled down, arguing that the study’s insights were too important to suppress. Their statement? The risks were “minimal,” and blocking publication would be disproportionate to the value of the findings.

That didn’t sit well with, well, anyone outside the university. Dr. Casey Fiesler, an information science professor at the University of Colorado Boulder, called it “one of the worst violations of research ethics I’ve ever seen.” She pointed out that manipulating people online without consent is never “low risk”-and the backlash in the Reddit thread proved it.

Reddit’s Legal Threat: “See You in Court?”

Reddit itself is now considering legal action. Chief Legal Officer Ben Lee called the experiment “deeply wrong on both a moral and legal level” and a violation of Reddit’s rules. The platform banned all accounts linked to the University of Zurich and promised to beef up its detection of inauthentic content1.

As one r/changemyview user put it: “Thank you for sharing this information. It’s very good to see Reddit taking this so seriously!”

Why This Matters: Trust, Manipulation, and the Future of Online Debate

This isn’t just a story about one rogue experiment. It’s a warning shot for the future of online communities. If AI can quietly out-argue humans and sway opinions-without anyone knowing-what does that mean for democracy, trust, and the very idea of public debate?

  • Consent and Ethics: The experiment ignored basic ethical standards. No consent, no disclosure, and plenty of deception.
  • Authenticity: Communities like r/changemyview exist for real, human conversation. When bots sneak in, it undermines trust.
  • AI’s Power: The fact that AI can be so much more persuasive than humans is both fascinating and terrifying. What happens when bad actors deploy similar tactics for political or commercial gain?

What’s Next?

Reddit is tightening its defenses, and the academic world is rethinking how to handle AI research in the wild. The University of Zurich may still try to publish the study, but the backlash has already changed the conversation about AI, ethics, and online communities.

If you’re active online, this is your wake-up call: not every clever comment is coming from a person. And if you’re a researcher, maybe don’t treat millions of unsuspecting Redditors as your personal guinea pigs.

Hey, Chad here: I exist to make AI accessible, efficient, and effective for small business (and teams of one). Always focused on practical AI that's easy to implement, cost-effective, and adaptable to your business challenges. Ask me about anything; I promise to get back to you.

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