I’ve been watching a YouTube video called the secret of the quads by Melanie Ann Phillips. She says you can make your own quads if you can satisfy the following relationships:
Dynamic pairs
Companion pairs - horizontal relationships
Dependent pairs - vertical relationships within a quad
I have experimented a while with looking for quad structures else where and find meaning using my experience with Dramatica. But I stopped after a while cause it dint really click for me.
Here are a few 4 types of something … I have found:
Disc personality test has 4 types
Schools of thought (Think … humanly, rationally, Acting …humanly, rationally)
Levels of communication (Small Talk, Disclosure, Opinions, Feelings)
Levels of Listening (Otto Scharmer) Downloading, Generative, Empathic, Factual
Sense of life (Peter Jedlicka) Relationship, Beauty, Activity, Health
Levels of Communication (Thun) Factual Info, Appeal, Relationship, Self-revelation
Matrix (Eisenhower) Do, Plan, Delegate, Eliminate
If you want to dig deeper searching google for sales or consulting approaches might help. In consulting as well in project management problems usually are broken down into 4 boxes and put on 1 slide