Final answer:
According to Davey, the fight is not over despite the setback because they believe victory is still possible.
Step-by-step explanation:
According to Davey, the fight is not over despite the setback because they believe that victory is still possible. Davey and others have convinced themselves through repeated statements and beliefs that they can triumph and achieve their goals. This is similar to how some leaders in history continued to fight wars despite setbacks, believing that only victory would justify the lives already lost.