Decision trees can be used as a basis for testing new strategies or to explain strategies to others. A decision tree explains what will happen under a given set of assumptions. They can also be used to evaluate the performance of a strategy that was used in the past. Decision trees are known to be too susceptible to errors because of all their branches. Decision trees are not always accurate because, sometimes, they don’t take into account all possible variables, and the person analyzing the decision tree might not be experienced in all the aspects of the particular situation.