At a space research zone, tracking platforms were marked with integer positions above and below the central station at 0. A fast meteor triggered sensors at platforms 7, -4, -11, and 2, but the readings arrived out of order. Luna, Emek, and Nova needed to reconstruct its path before aiming the observation system. Luna arranged the positions from least to greatest: -11, -4, 2, 7. Emek noticed that the meteor had moved 7 position units from -11 to -4, then 6 units from -4 to 2, and finally 5 units from 2 to 7. Nova used the ordered readings to predict that the meteor was continuing toward greater positions. The team aimed the station's telescope in that direction, and moments later the meteor appeared exactly where they expected.