Social innovations (SIs) frequently bring previously unrelated actors, ideas, and practices together in new configurations with the goal of addressing social needs. However, the dizzying variety of definitions of SI and their dynamic, exploratory character raise dilemmas for evaluators tasked with their evaluations. This article is based on a…

Theory of change (ToC) is currently "the" approach for the evaluation and planning of international development programs. This approach is considered especially suitable for complex interventions. We question this assumption and argue that ToC's focus on cause-effect logic and intended outcomes does not do justice to the recursive nature…