 A special case of rationality as coherence regards the coherence of sets of emotions. Helm (2009) has argued that emotions come in rational patterns centered around the things that have import for the agent. For instance, if avoiding death is a concern of mine, then I should not only feel fear when my life is threatened by a deadly disease, but I should also feel, on pain of irrationality, relief once the threat dissipates and sadness or disappointment if the disease progresses instead.