Why-Because Graphs
One of the results of the Why-Because-Analysis is a Why-Because-Graphs, which is a graphical representation of the causal relationships between all factors that make up the causal explanation of an incident or accident. Factors can be Events, States, Processes, Un-Events, and are represented as nodes in the graph. A causal relationship between two nodes, meaning “This node is a necessary causal factor of this other node” is represented by an arrow.
WB-Graphs have been an invaluable tool for getting a good understanding what went wrong to lead to a specific accident, and how to avoid a recurrence.