Suppose you are facilitating the build of a new deck for your house. Consider the possibility that people change, projects change, and a change in one area can and will affect many other areas as well. Discuss what you as the project manager will do when the project changes. As scope increases, resources become scarce, workers become abundant, the company that owns the project has a change of mind, so on and so on... Explain how you will convey these changes to the team, adjust activities, and coordinate the project again.