... key concept of this approach is the closed negative feedback loop which is an important process for controlling internal state and behaviour (Manning and Dawkins 1998). The system as a whole compares the current state of a particular variable to a reference value at which the system is designed to maintain itself, if there is any discrepancy between the two values mechanisms are activated to remove the discrepancy and bring it back to the reference value (Huntingford 1984). The principles of the control theory are used to build specific models, and one of the major strengths of the control theory is that its models can be tested quantitatively and can therefore be supported or falsified. The results of experiments are used to constantly develop and improve the predictions made by the models. The control theory overall is a fairly powerful theory and has very few limitations in general but by ...

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