The document discusses different types of audits that can help with decision making in complex situations. It outlines expert opinion, advice, inspection, and review as common types of audits. For each type, it provides details on timeline, depth, focus, and output. The document also describes the typical three step process for an audit: defining the central question, analyzing the situation, and drawing conclusions. It emphasizes that an audit is a collaboration, snapshot, and about looking forward to support decision making.