Here is a cannot load software on pc fishbone diagramA fishbone diagram is commonly used to center a conversation around a problem in product development and troubleshooting processes. After the group has discussed all possible explanations for an issue, the facilitator assists the group in ranking the potential causes by priority and drawing a hierarchy. The term stems from the design of the diagram, which resembles a fish skeleton. Fishbone diagrams are usually drawn from right to left, with each big "bone" of the fish branching out to smaller bones, each with more detail.