Walter Quattrociocchi
@walter4c.bsky.social
Full Professor of Computer Science @Sapienza University of Rome.
Data Science, Complex Systems
Data Science, Complex Systems
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.
PNAS commentary ⬇️
www.pnas.org/doi/10.1073/...
They skip straight to the answer.
No evaluation.
No grounding.
Just fluent output.
When generation bypasses judgment, knowledge becomes a performance.
Welcome to Epistemia.
PNAS commentary ⬇️
www.pnas.org/doi/10.1073/...
November 26, 2025 at 9:28 AM
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.
PNAS commentary ⬇️
www.pnas.org/doi/10.1073/...
They skip straight to the answer.
No evaluation.
No grounding.
Just fluent output.
When generation bypasses judgment, knowledge becomes a performance.
Welcome to Epistemia.
PNAS commentary ⬇️
www.pnas.org/doi/10.1073/...
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:https://www.pnas.org/doi/10.1073/pnas.1517441113
LLMs drop cost of “knowledge-like” content to zero.
Result: Epistemia — when language sounds like knowledge.
Outsourcing shifts decisions from evidence → plausibility
PNAS:https://www.pnas.org/doi/10.1073/pnas.1517441113
November 18, 2025 at 8:44 AM
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:https://www.pnas.org/doi/10.1073/pnas.1517441113
LLMs drop cost of “knowledge-like” content to zero.
Result: Epistemia — when language sounds like knowledge.
Outsourcing shifts decisions from evidence → plausibility
PNAS:https://www.pnas.org/doi/10.1073/pnas.1517441113
#Grokipedia just launched.
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
October 29, 2025 at 8:05 AM
#Grokipedia just launched.
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
An AI-built encyclopedia, pitched as a “neutral” alternative to Wikipedia.
But neutrality is not the point.
What happens underneath is.
👇
“LLMs don’t understand.”
Of course. That was never the point.
The point is: we’re already using them as if they do —
to moderate, to classify, to prioritize, to decide.
That’s not a model problem.
It’s a systemic one.
The shift from verification to plausibility is real.
Welcome to Epistemia.
Of course. That was never the point.
The point is: we’re already using them as if they do —
to moderate, to classify, to prioritize, to decide.
That’s not a model problem.
It’s a systemic one.
The shift from verification to plausibility is real.
Welcome to Epistemia.
October 20, 2025 at 5:31 PM
“LLMs don’t understand.”
Of course. That was never the point.
The point is: we’re already using them as if they do —
to moderate, to classify, to prioritize, to decide.
That’s not a model problem.
It’s a systemic one.
The shift from verification to plausibility is real.
Welcome to Epistemia.
Of course. That was never the point.
The point is: we’re already using them as if they do —
to moderate, to classify, to prioritize, to decide.
That’s not a model problem.
It’s a systemic one.
The shift from verification to plausibility is real.
Welcome to Epistemia.
1/ 🎉 First paper of 2025!
In the quantitative study of the attention economy, we asked a key question:
How much does a like—or a viral post—truly reverberate?
Our new study, published in Scientific Reports, dives into this crucial topic. 🧵
In the quantitative study of the attention economy, we asked a key question:
How much does a like—or a viral post—truly reverberate?
Our new study, published in Scientific Reports, dives into this crucial topic. 🧵
January 3, 2025 at 2:04 PM
1/ 🎉 First paper of 2025!
In the quantitative study of the attention economy, we asked a key question:
How much does a like—or a viral post—truly reverberate?
Our new study, published in Scientific Reports, dives into this crucial topic. 🧵
In the quantitative study of the attention economy, we asked a key question:
How much does a like—or a viral post—truly reverberate?
Our new study, published in Scientific Reports, dives into this crucial topic. 🧵
Breaking News! Our latest paper has just been published in PNAS! 📄
We analyzed 34 years of data a cross 8 social media platforms to uncover how language has evolved in the digital age.
👉 Read the paper here www.pnas.org/doi/10.1073/...
We analyzed 34 years of data a cross 8 social media platforms to uncover how language has evolved in the digital age.
👉 Read the paper here www.pnas.org/doi/10.1073/...
December 6, 2024 at 9:02 PM
Breaking News! Our latest paper has just been published in PNAS! 📄
We analyzed 34 years of data a cross 8 social media platforms to uncover how language has evolved in the digital age.
👉 Read the paper here www.pnas.org/doi/10.1073/...
We analyzed 34 years of data a cross 8 social media platforms to uncover how language has evolved in the digital age.
👉 Read the paper here www.pnas.org/doi/10.1073/...
1/ 🚨 New preprint on arXiv 🚨
"Characterizing the Fragmentation of the Social Media Ecosystem" arxiv.org/abs/2411.16826
@matteo_cinelli
,
@m_starnini
edoardo di martino Alessandro Galeazzi #echoplatforms #fragmentation
"Characterizing the Fragmentation of the Social Media Ecosystem" arxiv.org/abs/2411.16826
@matteo_cinelli
,
@m_starnini
edoardo di martino Alessandro Galeazzi #echoplatforms #fragmentation
November 27, 2024 at 7:56 AM
1/ 🚨 New preprint on arXiv 🚨
"Characterizing the Fragmentation of the Social Media Ecosystem" arxiv.org/abs/2411.16826
@matteo_cinelli
,
@m_starnini
edoardo di martino Alessandro Galeazzi #echoplatforms #fragmentation
"Characterizing the Fragmentation of the Social Media Ecosystem" arxiv.org/abs/2411.16826
@matteo_cinelli
,
@m_starnini
edoardo di martino Alessandro Galeazzi #echoplatforms #fragmentation