Pilot mistaken for his machine's infection
A First World War aviator is carried off from the front and set down on Faremido, a planet of self-repairing machine beings, the Solasi, who speak in musical tones. As he describes his body, its hunger, decay, and the war he came from, they conclude that the machines of Earth are its proper inhabitants and that humans are an organic mould infesting them. The episode is a test case of how an outsider with different values would diagnose human civilization: as a pathology, not an achievement.