Activity 4: Adding Alternative Paths

You now have a good part of the functionality of the most expected path of the project. It is time to consider alternative paths. These paths are also expected, but they are expected to be less frequent than the happy path.

Alternative paths can be more, equally, or less desirable than the most expected path. In this activity we will adopt the convention of adding more desirable, or "happier", paths above the most expected path, and less desireable or "less happy" paths below the most expected path.