In economics[ edit ] Markets with social influence[ edit ] Product recommendations and information about past purchases have been shown to influence consumers choices significantly whether it is for music, movie, book, technological, and other type of products.
This is usually unknown, and under certain conditions this process can amplify exponentially and rapidly lead to destructive or chaotic behavior.
The Mandelbrot set black within a continuously colored environment is plotted by repeatedly feeding back values through a simple equation and recording the points on the imaginary plane that fail to diverge Main articles: Dynamical systemChaos theoryEdge of chaosand Control theory By using feedback properties, the behavior of a system can be altered to meet the needs of an application; systems can be made stable, responsive or held constant.
It has been suggested that the similarity between the curves of biodiversity and human population probably comes from the fact that both are derived from the interference of the hyperbolic trend produced by the positive feedback with cyclical and stochastic dynamics.
This video feedback effect was used in the opening sequences to the first ten series of the television program Doctor Who. According to Black: Positive feed-back increases the gain of the amplifier, negative feed-back reduces it.
Red and black mean logical '1' and '0', respectively. Brian Arthur has also studied and written on positive feedback in the economy e. Genetic engineers have constructed and tested simple positive feedback networks in bacteria to demonstrate the concept of bistability.
The hyperbolic character of biodiversity growth can be similarly accounted for by a positive feedback between the diversity and community structure complexity.