The Effects of Input Distributions on Results, we discussed input distributions. The randomness in input variables causes the variability in the output variables. We now briefly explore whether the choice of input distribution(s) makes much difference in the distribution of an output variable such as profit. This is an important question. If the choice of input distributions doesn’t matter much, then you do not need to agonize over this choice. However, if it does make a difference, then you have to be more careful about choosing an appropriate input distribution. Unfortunately, it is impossible to answer the question definitively. The best we can say in general is, “It depends.” Some models are more sensitive to changes in the shape or parameters of input distributions than others. Still, the issue is worth exploring.