Sunny challenges the class to not advocate for the guilty man, stating that by doing so they are becoming advocates for the crime. Her professor provides a rebuttal and asks if the man really had a fair trial. The basis of the legal system is that everyone gets a defense and the right to a fair trial.
Professor Dershowitz attempts to bring new evidence to a case on appeal and initially gets shutdown by the judge. He states that the judge himself established that a case based on circumstantial theory only stands up if no other theory makes sense. The professor can only show a better theory by presenting it. As a result, the judge grants him permission to present new evidence.