Free Information Disrupts Even Bayesian Crowds

Fuente: arXiv
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Main Authors: Stein, Jonas, Cruz, Shannon, Grossi, Davide, Testori, Martina
Format: Preprint
Published: 2026
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author Stein, Jonas
Cruz, Shannon
Grossi, Davide
Testori, Martina
author_facet Stein, Jonas
Cruz, Shannon
Grossi, Davide
Testori, Martina
contents A core tenet underpinning the conception of contemporary information networks, such as social media platforms, is that users should not be constrained in the amount of information they can freely and willingly exchange with one another about a given topic. By means of a computational agent-based model, we show how even in groups of truth-seeking and cooperative agents with perfect information-processing abilities, unconstrained information exchange may lead to detrimental effects on the correctness of the group's beliefs. If unconstrained information exchange can be detrimental even among such idealized agents, it is prudent to assume it can also be so in practice. We therefore argue that constraints on information flow should be carefully considered in the design of communication networks with substantial societal impact, such as social media platforms.
format Preprint
id arxiv_https___arxiv_org_abs_2604_01838
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Free Information Disrupts Even Bayesian Crowds
Stein, Jonas
Cruz, Shannon
Grossi, Davide
Testori, Martina
Multiagent Systems
Theoretical Economics
Physics and Society
A core tenet underpinning the conception of contemporary information networks, such as social media platforms, is that users should not be constrained in the amount of information they can freely and willingly exchange with one another about a given topic. By means of a computational agent-based model, we show how even in groups of truth-seeking and cooperative agents with perfect information-processing abilities, unconstrained information exchange may lead to detrimental effects on the correctness of the group's beliefs. If unconstrained information exchange can be detrimental even among such idealized agents, it is prudent to assume it can also be so in practice. We therefore argue that constraints on information flow should be carefully considered in the design of communication networks with substantial societal impact, such as social media platforms.
title Free Information Disrupts Even Bayesian Crowds
topic Multiagent Systems
Theoretical Economics
Physics and Society
url https://arxiv.org/abs/2604.01838