[Médias et recherche] Fabrique de l'information, fabrique de l'opinion ? | ENS-PSL

[Médias et recherche] Fabrique de l'information, fabrique de l'opinion ? | ENS-PSL

🎙 École normale supérieure - PSL 👥 75K 📅 June 15, 2026 ⏱ 54 min 👁 405 📄 debate 🧭 2026-08-03
Available in: English (current) Français

Keywords

désinformationmésinformationmalinformationignoranceblanchiment narratif

Summary

This roundtable, part of a study day on the new information landscape, brings together Adrien Broche (Viavoice), Mathias Girel (philosopher, ENS-PSL), and Hugo Mercier (cognitive scientist, ENS-PSL) to discuss disinformation. The discussion begins with Mathias Girel’s attempt to define disinformation, emphasizing that the true/false dichotomy is insufficient. He introduces concepts like misinformation, malinformation, and ignorance-generating content, drawing on the work of Mona Simion. He also highlights phenomena such as fake news, propaganda, clickbait, deepfakes, and narrative laundering, using the example of a Chicago Sun article with AI-hallucinated book recommendations to illustrate pollution by AI. The panel then explores the measurement of disinformation’s impact, with Hugo Mercier likely challenging the idea that people are easily duped, based on his research on human rationality. Adrien Broche presents findings from a Viavoice barometer on journalism’s usefulness, showing French perceptions of disinformation. The discussion addresses the historical context, the role of social media, and potential countermeasures, including media literacy and institutional responses. The tone is academic but accessible, aiming to clarify concepts and separate myths from realities.

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Critical Evaluation

The roundtable provides a nuanced and intellectually rigorous examination of disinformation, avoiding common pitfalls of moral panic or oversimplification. Mathias Girel’s opening taxonomy is particularly valuable, as it moves beyond the simplistic true/false binary to include misinformation, malinformation, and ignorance-generating content. This conceptual clarity is essential for any serious discussion of the topic. The example of the Chicago Sun’s AI-hallucinated reading list effectively illustrates how even established media can inadvertently contribute to information pollution, highlighting the systemic nature of the problem. Hugo Mercier’s presence ensures that the discussion is grounded in cognitive science, challenging the widespread assumption that people are inherently credulous. His work, as referenced in his book ‘Pané de la dernière pluie’, suggests that human reasoning is often more robust than assumed, and that disinformation’s impact may be overstated. This perspective is crucial for a balanced assessment. Adrien Broche’s contribution from the polling industry provides empirical data on public perceptions, bridging the gap between academic theory and real-world attitudes. The moderation by Romain Pigenel keeps the discussion focused and accessible. However, the roundtable format means that some points are not fully developed, and the lack of visual aids or specific data citations may limit the depth for some viewers. The sources cited are primarily the speakers’ own works and general references, with no direct links to academic papers provided in the video description. Overall, the video is a high-quality, thought-provoking discussion that offers valuable insights for both academics and the general public, though it assumes some prior knowledge of the topic.

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Title / Content Match

The title accurately reflects the content: a roundtable on the relationship between information and opinion, focusing on disinformation.

Quality & Reliability

8/10

The video features three experts (a philosopher, a cognitive scientist, and an opinion poll specialist) discussing disinformation from academic and professional perspectives. The content is well-structured, references academic concepts and recent examples, and avoids sensationalism. However, it is a roundtable discussion without formal peer review, and some claims are not fully sourced within the video.

Key Moments

Cited Sources

Concurring Sources

  • Not Born Yesterday: The Science of Who We Trust and What We Believe — Hugo Mercier's book, which argues that humans are not as gullible as often assumed, aligning with his views in the video.
  • Information Disorder: Toward an interdisciplinary framework for research and policy making — A Council of Europe report that provides a taxonomy of disinformation, misinformation, and malinformation, similar to Girel's discussion.

Dissenting Sources

Contribution & Novelties

The video provides a comprehensive and interdisciplinary overview of disinformation, integrating philosophical, cognitive, and polling perspectives. It clarifies key concepts and challenges common assumptions, particularly the notion that people are easily fooled. The discussion offers a balanced view, acknowledging the real risks while avoiding panic.

Pour aller plus loin :

  • Manuel d’anti-utopie — Reference to the book translated by Mathias Girel, though the exact URL is not provided; it is available in open access.
  • Not Born Yesterday: The Science of Who We Trust and What We Believe — Hugo Mercier’s book on human credulity, relevant to the discussion.
  • Information Disorder: Toward an interdisciplinary framework for research and policy making — A Council of Europe report that provides a framework for understanding disinformation.

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Radar Profile

The radar profile shows high scores in information quantity, quality, and reliability, with a slightly lower technical level, indicating that the content is rich and reliable but accessible to a broader audience.

Reliability 8/10