Simulation is a common technique in the natural and social sciences. It is less common (though not unheard of) in the humanities. We have developed and are exploiting the PolyGraphs simulation framework to conduct philosophical research surrounding the nature of rational opinion formation (in individuals and groups), the effectiveness of various information processing strategies under adverse conditions, and the truth-conduciveness (and other pro-democratic characteristics) of various social network structures. Our Python code is scalable, allowing us to explore large datasets on realistic networks (e.g. on the National Internet Observatory, or through access enabled under the EU’s Digital Services Act); and it is built to enable machine learning, on the deep graph learning library….