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“As we pass through the chaotic terrain of Sputnik Planitia,” the director said, speaking into a microphone at the front of the rover, “let’s think about the difference between a maze and a labyrinth. A maze has many paths. There are dead ends, and there might be more than one way to reach the center. A labyrinth, on the other hand, has only one way to pass through. They were used for meditation and to simulate pilgrimages in medieval Europe. No matter how a labyrinth winds, you will get where you’re going; there’s only one path, the true path, and