Evolution toward increased dynamism and controllability

This is a complex pattern, which can be described thus  

An engineering system evolves in such a direction as to maximize its dynamism and controllability. 

For example, when we consider spoilers in sports cars, we may have small spoilers integrated with the chassis, and these are static systems. There is also a large class of rear spoilers called wings, which are positioned in a certain distance from the car body and are not integrated with it. We have fixed wings, which are always in the same position, and these are static systems. We have also dynamic wings, which can be adjusted into one 

The system s dynamism is directly associated with its controllability, and thus these two notions are covered by a single pattern of evolution. However, many TRIZ experts consider the issues of dynamism and controllability separately and promote two separate patterns. 

An engineering system evolves through stages of growing complexity 

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