Agents with numeric opinion, stubbornness, and activity generate posts and update positions on synthetic HRG and Twitter/Reddit graphs. Random, degree, centrality, and community selection are compared; adversaries are persistent or susceptible; reactive moderators and exposure, feed, filtering, activity, and connection interventions are tested. Results average 10 runs.
Synthetic networks and graphs derived from Twitter and Reddit, with GPT-4.1-mini as the main model and GPT-4o-mini and DeepSeek for sensitivity. The paper does not clearly report every graph size. Persistent and community-selected adversaries increased polarization and extremization. Increasing the manipulation budget strengthened the effect. Mitigations reduced the attack but did not restore baseline. Qualitative trends persisted across models and graphs.
Networks are fixed and opinions are reduced to one scalar. There is no validation against real social dynamics. Graph sizes and details are incomplete. Uncertainty is presented mainly through figures. The adversary is non-adaptive and scale is limited by cost. It does not demonstrate behavior of human populations. It does not estimate effects on a real platform. It does not show that any mitigation guarantees baseline recovery.