Which technique is not typically used for visualizing the flow of a process?

The Fishbone Diagram, also known as the Ishikawa or cause-and-effect diagram, is primarily utilized for identifying root causes of problems within a process rather than for visualizing the flow of that process. It helps teams systematically think through the potential factors that contribute to a specific issue by categorizing them, but it does not depict the sequence or the flow of activities involved in a process.

In contrast, techniques like Value Stream Mapping, Activity Network Diagrams, and Tree Diagrams are specifically designed to illustrate not only the steps in a process but also how these steps interact and connect. Value Stream Mapping focuses on the flow of materials and information through a process to identify areas for improvement, while Activity Network Diagrams represent tasks and dependencies, allowing for a clear visualization of the order in which activities occur. Tree Diagrams can break down tasks hierarchically, showing the relationship and flow from general tasks to more specific sub-tasks. Thus, the Fishbone Diagram is distinct in its purpose and does not fit the category of process flow visualization.