Purely History on Instagram: "In 2006, The Simpsons aired a segment that explained the theory of evolution in a very condensed and musical way. It appeared in the Treehouse of Horror XVI episode, during a short segment that follows Homer moving through different stages of human evolution in a rapid sequence, presenting the concept in a simple and memorable format. The scene was brief, but it was based on the core idea of evolutionary progression. That is why it is often referenced as The Simpson