For decades, the Academy had used the Nabla to build grand aqueducts and perfect steam engines. They thought they were mastering nature. But Elian had discovered the final page of the ancient parchment. When the Nabla was applied not to space, but to the field of time itself, it didn't show a path forward. It showed a collapse.
"Because nothing in this universe likes to stay where it is," Elian had answered, his voice raspy from the valley’s sulfurous wind. "Everything is sliding. Heat flees to the cold. High pressure screams toward the void. Rivers butcher mountains just to find a lower place to rest." Upside Down Triangle Symbol Math
He looked at the brass compass in his hand. The needle was trembling violently now, pointing straight down into the shadow of the cone. For decades, the Academy had used the Nabla