In the previous chapter, we have introduced the basics for managing a project. In fact, goals, time, and costs establish the characteristics of the products to build, the work to be performed, its timing, and its costs.
In the scenario, we set in the previous chapter, we followed the process end-to-end, but little space was dedicated to the unpredictability of projects. We discussed uncertainties of estimations and hinted about variations in Section 3.9, where we saw how to evaluate progress in a project.
It is time to start all over! In this chapter, we introduce two main sources of perturbations in the plans we defined in the previous chapter. The first main source of perturbation ...