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Main Author: Cifuentes, Santiago
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2602.03146
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author Cifuentes, Santiago
author_facet Cifuentes, Santiago
contents Deciding whether an agent possesses a model of its surrounding world is a fundamental step toward understanding its capabilities and limitations. In [10], it was shown that, within a particular framework, every almost optimal and general agent necessarily contains sufficient knowledge of its environment to allow an approximate reconstruction of it by querying the agent as a black box. This result relied on the assumptions that the agent is deterministic and that the environment is fully observable. In this work, we remove both assumptions by extending the theorem to stochastic agents operating in partially observable environments. Fundamentally, this shows that stochastic agents cannot avoid learning their environment through the usage of randomization. We also strengthen the result by weakening the notion of generality, proving that less powerful agents already contain a model of the world in which they operate.
format Preprint
id arxiv_https___arxiv_org_abs_2602_03146
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle General Agents Contain World Models, even under Partial Observability and Stochasticity
Cifuentes, Santiago
Artificial Intelligence
68T42
Deciding whether an agent possesses a model of its surrounding world is a fundamental step toward understanding its capabilities and limitations. In [10], it was shown that, within a particular framework, every almost optimal and general agent necessarily contains sufficient knowledge of its environment to allow an approximate reconstruction of it by querying the agent as a black box. This result relied on the assumptions that the agent is deterministic and that the environment is fully observable. In this work, we remove both assumptions by extending the theorem to stochastic agents operating in partially observable environments. Fundamentally, this shows that stochastic agents cannot avoid learning their environment through the usage of randomization. We also strengthen the result by weakening the notion of generality, proving that less powerful agents already contain a model of the world in which they operate.
title General Agents Contain World Models, even under Partial Observability and Stochasticity
topic Artificial Intelligence
68T42
url https://arxiv.org/abs/2602.03146