Authors often use their own personal experiences to inform their story lines and develop their characters. the fact that arthur conan doyle uses this technique is made most evident through

1. fallacy of logos "my favorite teacher said that we should vote for mr. martinez, so i believe he is the best." 2. fallacy of ethos "if we don't pass this environmental protection bill now, the world will probably end soon." 3. fallacy of pathos "the last time it rained, our local sports team won. it is raining today, so they will win tonight."