 Importantly, though, the Foole does not just present a challenge to those who endorse her reasoning. This is because in order to avoid being taken advantage of by individuals who reason like the Foole, individuals who might otherwise be inclined to keep their promises can sometimes find themselves with reason to break their promises. We see this in  Figure 3  below which depicts the sequential prisoner’s dilemma that results from extending the decision tree from  Figure 2  to include Claudia’s initial move.