"Lisa the Skeptic" is the eighth episode of the ninth season of the American animated television series The Simpsons. It first aired on the Fox network in the United States on November 23, 1997. On an archaeological dig with her class, Lisa discovers a skeleton that resembles an angel. All of the townspeople believe that the skeleton actually came from an angel, but skeptical Lisa attempts to persuade them that there must be a rational scientific explanation. The episode's writer, David X. Cohen, developed the idea after visiting the American Museum of Natural History, and decided to loosely parallel themes from the Scopes Monkey Trial. The episode also makes allusions to actual hoaxes, such as the Cardiff Giant. It has been discussed in the context of ontology, existentialism, and skepticism; it has also been used in Christian religious education classes to initiate discussion about angels, science, and faith. Plot Homer attempts to claim a motorboat from a "police raffle" that turns out to be a sting operation. While returning home, the family passes a new mall being built on an area where a number of fossils were found. Lisa protests and the management allows Springfield Elementary to conduct an archaeological survey. During the excavations, Lisa finds a human skeleton with wings. Springfield's residents are convinced it is the remains of an angel, and Homer cashes in by moving the skeleton into the family's garage, charging visitors to see it. Lisa remains skeptical and asks scientist Dr. Stephen Jay Gould to test a sample of the skeleton. When Dr. Gould appears at the Simpson house the next day to tell Lisa that the tests were inconclusive, Lisa goes on television to compare the belief in angels to the belief in fictional things, such as leprechauns. In response, Springfield's religious zealots go on a rampage to destroy all scientific institutions. Appalled with the violence, Lisa goes into the garage to destroy the skeleton, but finds that it has disappeared. The mob soon converges on the Simpson household, and Lisa is arrested and put on trial for destroying the skeleton. Before the trial even begins, the skeleton is seen outside the courtroom. Everyone rushes to it to see a foreboding message added to the skeleton, warning that "The End" will come at sundown. Sunset approaches and the citizens gather around the skeleton, but nothing happens. As Lisa reprimands them, a booming voice from