Here in the following video we see the Stanford beers’ model of cybernetics which can be viewed as a pct control system, here we see it as applied to an organization or a social system.
[https://youtu.be/aSknWjWgAkQ](http://“UMS and the master herder” Stanford beer cybernetic system video)
The five horses type mentioned can be correlated to the five personalities types of the “big five personalities traits” here:
[https://en.m.wikipedia.org/wiki/Big_Five_personality_traits?wprov=sfti1](http://Big five personalities Wikipedia page)
According to these things, our personality can be a function of our position or function within groups.
So a social pct model could give different functions in a group to different types of people as together they would act as a control system seeking to maintain some references.