 While this section describes some success stories, it is safe to say that no analysis of actual causation is widely believed to perfectly capture all of our pre-theoretic intuitions about hypothetical cases. Indeed, it is not clear that these intuitions form a coherent set, or that they are perfectly tracking objective features of the world. Glymour et al. (2010) raise a number of challenges to the general project of trying to provide an analysis of actual causation.