The third step to resolving conflict in lean manufacturing is to use the appropriate tools and techniques that can help facilitate communication, collaboration, and consensus. For example, the A3 report is a one-page document that summarizes the problem, root causes, countermeasures, action plan, and results using the PDCA cycle. It can be used to present and discuss issues and solutions with stakeholders. The 5 Whys is a simple technique that asks "why" five times to drill down to the root cause of a problem. Additionally, the fishbone diagram is a visual tool that organizes potential causes into six categories: people, process, equipment, materials, environment, and management. This can be used to brainstorm factors and relationships that contribute to a conflict. Moreover, gemba walk is a practice of going to the actual place where work is done to observe and learn from people and processes. Finally, kaizen events are short-term improvement projects that involve cross-functional teams working together to solve problems or implement changes. This can be used to address and resolve conflicts in a collaborative way.