3-1-6 understanding systems: Feedback loops

It means that you input something in the system, get an output and re-input it I the system ….. and so on

There are types of feedback loops

1-     Positive feedback loop

-          The output is positively larger than the input

-          It gets bigger exponentially

A special type of feedback loop is

Autocatalysis

-          Type: self-reinforcing feedback loop

-          It is a chemical term: some reactions produce what is necessary for them to continue – provide the conditions for the next reaction – even make the reaction be better/ stronger …etc.

-          Output ≥ input, and the output is re-inputted in the system again and again

-          Example: marketing campaigns that gets more money than the input amount and then re-input it into the system again (positive, exponential loop)

-          This kind of loop isn't infinite … it is converted with time to balancing loop because of market satisfaction or changes in the environment  

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2-     Negative feedback loop

-          You put negative input in the system

-          You get bigger negative output

-          The negative output gets larger and larger exponentially with every cycle

3-     Balancing feedback loop  

-          The output is smaller than the input

-          It gets smaller and smaller with time till it vanishes