A four-level scenario-building tool designed by futurist, Sohail Inayatullah, used to analyse and explore the deeper layers of meaning and causality underlying a particular issue or topic. The CLA has four levels: litany (an official description of events backed by data); systemic causes (social, economic, political structures and policies supporting the issue); worldview (deeper cultural assumptions and perspectives behind an issue); and myth or metaphor (narratives and inner stories).