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The butterfly effect—the idea that a butterfly flapping its wings in South America could change the course of a tornado in Texas—has been a popular way to illustrate the difficulty of making predictions about the behavior of chaotic systems like the weather. Because such systems are extremely sensitive to their initial conditions, even the tiniest of changes can send their behavior careening off into unexpected directions.
Sensor and actuator networks are systems that collect and transmit data from a physical environment for digital processing. Data is collected at sensors and actuators in the field, then digitized at the sensor or actuator. The digitized data can be used for a variety of applications, and the method for data processing depends on the application