While experienced lawyers can some times develop an intuitive sense of what a case is worth, their intuition may not be sufficient in a case of considerable complexity. Furthermore, intuitive "gut sense" valuations are hard to support or explain to clients.
Decision trees allow the parties and their lawyers to see more clearly how the strengths and weaknesses of their positions on specific issues will affect the overall value of a case. Long popular in the business community, decision analysis has evolved as a tool for lawyers to help make decisions in complex litigation.
Marjorie Corman Aaron & David P. Hoffer, Using Decision Trees As Tools for Settlement, 14 Alternatives High Cost Litig. 71 (1996).