The IPCC organise extensive model-comparison exercises - different models aimed at the same data/target. Many insights and much improvement in modelling resulted from doing this for climate change. Should epidemiologists do the same? See discussion paper on the need for model comparison at: New CfPM report: The Large-Scale, Systematic and Iterated Comparison of Agent-Based Policy Models | Centre for Policy Modelling . To be presented and discussed at Social Simulation 2021