Prerequisites determine what is needed to begin meeting the Requirements. When selecting Prerequisites, keep in mind they are to be used in your story as essential steps or items that must be met or gathered in order to attempt a Requirement. As such, the appropriate Type of Prerequisites is much more heavily influenced by the Type of Requirements than the Type of Goal.
Prerequisites may open the opportunity for easy ways to bring in Dividends, Costs, or even Preconditions (which we shall discuss shortly.) Certain Types of considerations may be more familiar to you than others as a result of your personal life experience. As such, they will likely be a better source of material from which to draw inspiration. Choosing a familiar Type will help you later on when it becomes time to illustrate your appreciations in Storyencoding.
From the Dramatica Theory Book