Despite growing expectations for events to deliver lasting legacies, most organisers still rely on economic metrics while overlooking the harder-to-measure social outcomes that matter most to communities. In this episode, we explore how Flanders is pioneering a more evidence-based, co-created approach to embedding social impact into event planning from the outset. By using Theory of Change models and adapting proven tools from other policy sectors, Flanders is redefining how events plan, measure, and communicate their broader societal contributions. The conversation highlights why overpromising outcomes erodes trust and why managing expectations through credible, evidence-based planning is critical. We also tackle the need for honest evaluation, recognising both positive legaciesand negative consequences, including environmental and social costs often ignored in headline reporting. This episode offers practical insights for event professionals, policymakers, and researchers seeking to design more accountable, people-centred events.