This document discusses using dialogue techniques to achieve large-scale change in complex situations. It outlines three fundamental dialogue concepts: monologue vs generative conversation, dialogue actions and intentions, and fields of conversation. Examples of using dialogue in NHS Fife are provided. The document recommends dialogue methodologies when issues are complex with no obvious solution, multiple interconnected roles must be aligned, and authority is unclear. Dialogue allows all voices and perspectives to be heard to increase understanding before commitment.