In this conversation, Stephen Webb, an author known for his exploration of the Fermi Paradox, delves into why we haven't encountered extraterrestrial life. He shares insights on the Drake Equation and various theories explaining the absence of detectable aliens. Topics include the principle of mediocrity, unidentified anomalous phenomena, and the Great Filter theory, which discusses potential barriers preventing advanced civilizations. Webb also emphasizes humanity's moral responsibility and the implications of being alone in the universe.