W. Quattrociocchi

@Walter4C

Full Professor @Sapienza University of Rome ~ Data Science and Complexity for Society #IVLP

walterquattrociocchi.site.uniroma1.it Joined January 2012

543 Following 2.7K Followers 1.5K Posts

Latest posts 5

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W. Quattrociocchi @Walter4C Mar 20, 2024

Finally out our paper in Nature "Persistent Interaction Patterns across Social Media and Over Time"
nature.com/articles/s4158…
#Toxicity #OnlineSocialDynamics @a_baronca @matteo_cinelli @RicercaSapienza @SapienzaRoma

W. Quattrociocchi @Walter4C May 21

The Survey.
15 years of research on social media.
Polarization, misinformation, algorithms, echo chambers, coordinated behavior, opinion dynamics.
Patterns, Models, and Challenges in Online Social Media is now out in ACM TWeb dl.acm.org/doi/10.1145/37…

W. Quattrociocchi @Walter4C Nov 26, 2025

LLMs don’t form judgments.
They skip straight to the answer.
No evaluation.
No grounding.
Just fluent output.
When generation bypasses judgment, knowledge becomes a performance.
Welcome to Epistemia. @PNASNews @SapienzaRoma

pnas.org/doi/10.1073/pn…

W. Quattrociocchi @Walter4C Nov 25, 2025

Epistemia at work

Gary Marcus Verified account @GaryMarcus Nov 24, 2025

Is the worst consequence of Generative AI the damage it has done to artists, writers, and other creators? The damage it is doing to trust and truth? The cyberattacks it is enabling?

Or the damage that is doing to our youth?

A case for the latter:
View quoted post on X

W. Quattrociocchi @Walter4C Nov 18, 2025

Data changed the info business model: confirmation → echo chambers → infodemics.
LLMs drop cost of “knowledge-like” content to zero.
Result: Epistemia — when language sounds like knowledge.
Outsourcing shifts decisions from evidence → plausibility
PNAS: pnas.org/doi/10.1073/pn…